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Parker SL, Dorofaeff T, Lipman J, Ballot DE, Bandini RM, Wallis SC, Roberts JA. Is there a role for microsampling in antibiotic pharmacokinetic studies? Expert Opin Drug Metab Toxicol 2016; 12:601-14. [PMID: 27087416 DOI: 10.1080/17425255.2016.1178238] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Clinical pharmacokinetic studies of antibiotics can establish evidence-based dosing regimens that improve the likelihood of eradicating the pathogen at the site of infection, reduce the potential for selection of resistant pathogens, and minimize harm to the patient. Innovations in small volume sampling (< 50 μL) or 'microsampling' may result in less-invasive sample collection, self-sampling and dried storage. Microsampling may open up opportunities in patient groups where sampling is challenging. AREAS COVERED The challenges for implementation of microsampling to assure suitability of the results, include: acceptable study design, regulatory agency acceptance, and meeting bioanalytical validation requirements. This manuscript covers various microsampling methods, including dried blood/plasma spots, volumetric absorptive microsampling, capillary microsampling, plasma preparation technologies and solid-phase microextraction. EXPERT OPINION The available analytical technology is being underutilized due to a lack of bridging studies and validated bioanalytical methods. These deficiencies represent major impediments to the application of microsampling to antibiotic pharmacokinetic studies. A conceptual framework for the assessment of the suitability of microsampling in clinical pharmacokinetic studies of antibiotics is provided. This model establishes a 'contingency approach' with consideration of the antibiotic and the type and location of the patient, as well as the more prescriptive bioanalytical validation protocols.
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Affiliation(s)
- Suzanne L Parker
- a Burns, Trauma and Critical Care Research Centre , The University of Queensland , Brisbane , Australia
| | - Tavey Dorofaeff
- a Burns, Trauma and Critical Care Research Centre , The University of Queensland , Brisbane , Australia.,b Paediatric Intensive Care , Lady Cilento Children's Hospital , Brisbane , Australia
| | - Jeffrey Lipman
- a Burns, Trauma and Critical Care Research Centre , The University of Queensland , Brisbane , Australia.,c Department of Intensive Care Medicine , Royal Brisbane and Women's Hospital , Brisbane , Australia.,d Faculty of Health , Queensland University of Technology , Brisbane , Australia
| | - Daynia E Ballot
- e Department of Paediatrics and Child Health , University of the Witwatersrand , Johannesburg , South Africa.,f Wits UQ Critical Care Infection Collaboration , Johannesburg , South Africa
| | - Rossella M Bandini
- g School of Physiology , University of the Witwatersrand , Johannesburg , South Africa
| | - Steven C Wallis
- a Burns, Trauma and Critical Care Research Centre , The University of Queensland , Brisbane , Australia
| | - Jason A Roberts
- a Burns, Trauma and Critical Care Research Centre , The University of Queensland , Brisbane , Australia.,c Department of Intensive Care Medicine , Royal Brisbane and Women's Hospital , Brisbane , Australia.,h Department of Pharmacy , Royal Brisbane and Women's Hospital , Brisbane , Australia.,i School of Pharmacy , The University of Queensland , Brisbane , Australia
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Alternative matrices for therapeutic drug monitoring of immunosuppressive agents using LC-MS/MS. Bioanalysis 2016; 7:1037-58. [PMID: 25966013 DOI: 10.4155/bio.15.35] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Immunosuppressive drugs used in solid organ transplants typically have narrow therapeutic windows and high intra- and intersubject variability. To ensure satisfactory exposure, therapeutic drug monitoring (TDM) plays a pivotal role in any successful posttransplant maintenance therapy. Currently, recommendations for optimum immunosuppressant concentrations are based on blood/plasma measurements. However, they introduce many disadvantages, including poor prediction of allograft survival and toxicity, a weak correlation with drug concentrations at the site of action and the invasive nature of the sample collection. Thus, alternative matrices have been investigated. This paper reviews tandem-mass spectrometry (LC-MS/MS) methods used for the quantification of immunosuppressant drugs utilizing nonconventional matrices, namely oral fluids, fingerprick blood and intracellular and intratissue sampling. The advantages, disadvantages and clinical application of such alternative mediums are discussed. Additionally, sample extraction techniques and basic chromatography information regarding these methods are presented in tabulated form.
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Mika A, Stepnowski P. Current methods of the analysis of immunosuppressive agents in clinical materials: A review. J Pharm Biomed Anal 2016; 127:207-31. [PMID: 26874932 DOI: 10.1016/j.jpba.2016.01.059] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/08/2016] [Accepted: 01/28/2016] [Indexed: 12/24/2022]
Abstract
More than 100000 solid organ transplantations are performed every year worldwide. Calcineurin (cyclosporine A, tacrolimus), serine/threonine kinase (sirolimus, everolimus) and inosine monophosphate dehydrogenase inhibitor (mycophenolate mofetil), are the most common drugs used as immunosuppressive agents after solid organ transplantation. Immunosuppressive therapy, although necessary after transplantation, is associated with many adverse consequences, including the formation of secondary metabolites of drugs and the induction of their side effects. Calcineurin inhibitors are associated with nephrotoxicity, cardiotoxicity and neurotoxicity; moreover, they increase the risk of many diseases after transplantation. The review presents a study of the movement of drugs in the body, including the processes of absorption, distribution, localisation in tissues, biotransformation and excretion, and also their accompanying side effects. Therefore, there is a necessity to monitor immunosuppressants, especially because these drugs are characterised by narrow therapeutic ranges. Their incorrect concentrations in a patient's blood could result in transplant rejection or in the accumulation of toxic effects. Immunosuppressive pharmaceuticals are macrolide lactones, peptides, and high molecular weight molecules that can be metabolised to several metabolites. Therefore the two main analytical methods used for their determination are high performance liquid chromatography with various detection methods and immunoassay methods. Despite the rapid development of new analytical methods of analysing immunosuppressive agents, the application of the latest generation of detectors and increasing sensitivity of such methods, there is still a great demand for the development of highly selective, sensitive, specific, rapid and relatively simple methods of immunosuppressive drugs analysis.
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Affiliation(s)
- Adriana Mika
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308 Gdańsk, Poland
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54
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Therapeutic drug monitoring of immunosuppressants by liquid chromatography-mass spectrometry. Clin Chim Acta 2015; 454:1-5. [PMID: 26721314 DOI: 10.1016/j.cca.2015.12.027] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/16/2015] [Accepted: 12/19/2015] [Indexed: 12/11/2022]
Abstract
Immunosuppressant medications allow the transplantation of tens of thousands of allografts per year and consequently have great potential to decrease patient morbidity and mortality. However, some medications have great risk associated with over- and under-dosing leading to adverse effects or allograft rejection, respectively. This necessitates immunosuppressant therapeutic drug monitoring accomplished by immunoassay or liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The former's accuracy can be hindered by metabolites of immunosuppressant medications, antibodies against these medications and heterophilic antibodies. Although LC-MS/MS has superior specificity which allows it to be less susceptible to interference, this methodology lacks standardization and the necessary throughput. Recent developments in LC-MS/MS quantitation, however, include patient-friendly sample submission as dried blood spots, higher sample throughput and commercialization. Here we critically review recent LC-MS/MS publications (January 2010 to July 2015) on the quantitation of cyclosporine A, tacrolimus, sirolimus and everolimus.
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Numako M, Takayama T, Noge I, Kitagawa Y, Todoroki K, Mizuno H, Min JZ, Toyo’oka T. Dried Saliva Spot (DSS) as a Convenient and Reliable Sampling for Bioanalysis: An Application for the Diagnosis of Diabetes Mellitus. Anal Chem 2015; 88:635-9. [DOI: 10.1021/acs.analchem.5b04059] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Masahiro Numako
- Laboratory
of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Takahiro Takayama
- Laboratory
of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Ichiro Noge
- Department
of Pharmaceuticals, Numazu City Hospital, Harunoki, Higashi-Shiizi, Numazu 410-0302, Japan
| | - Yutaka Kitagawa
- Department
of Clinical and Molecular Endocrinology, Numazu City Hospital, Harunoki, Higashi-Shiizi, Numazu 401-0302, Japan
| | - Kenichiro Todoroki
- Laboratory
of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hajime Mizuno
- Laboratory
of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Jun Zhe Min
- Laboratory
of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Toshimasa Toyo’oka
- Laboratory
of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical
Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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56
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Park JS, Cho HR, Kang MJ, Choi YS. A rapid and sensitive method to determine tacrolimus in rat whole blood using liquid–liquid extraction with mild temperature ultrasonication and LC–MS/MS. Arch Pharm Res 2015; 39:73-82. [DOI: 10.1007/s12272-015-0681-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 11/12/2015] [Indexed: 10/22/2022]
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What is the right blood hematocrit preparation procedure for standards and quality control samples for dried blood spot analysis? Bioanalysis 2015; 7:345-51. [PMID: 25697192 DOI: 10.4155/bio.14.298] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Remco Koster is a research analyst and PhD candidate at the University Medical Center Groningen and University of Groningen. He has been working in the field of bioanalysis for over 13 years, where he has developed numerous analytical methods using LC-MS/MS. His main research focus is the influence of various matrices on the development and performance of analytical methods using LC-MS/MS. The development of high-speed extraction and analysis methods for drugs and drugs of abuse in human matrices like blood, plasma, hair, saliva and dried blood spots often leads to improved procedures for preparation of standards and quality control samples, sample handling and validation. Two hematocrit preparation procedures for standards and quality control samples were evaluated in order to improve the quality of procedures for dried blood spot validation and analysis.
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Shokati T, Bodenberger N, Gadpaille H, Schniedewind B, Vinks AA, Jiang W, Alloway RR, Christians U. Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS. J Vis Exp 2015:e52424. [PMID: 26575262 DOI: 10.3791/52424] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The calcineurin inhibitor tacrolimus is the cornerstone of most immunosuppressive treatment protocols after solid organ transplantation in the United States. Tacrolimus is a narrow therapeutic index drug and as such requires therapeutic drug monitoring and dose adjustment based on its whole blood trough concentrations. To facilitate home therapeutic drug and adherence monitoring, the collection of dried blood spots is an attractive concept. After a finger stick, the patient collects a blood drop on filter paper at home. After the blood is dried, it is mailed to the analytical laboratory where tacrolimus is quantified using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) in combination with a simple manual protein precipitation step and online column extraction. For tacrolimus analysis, a 6-mm disc is punched from the saturated center of the blood spot. The blood spot is homogenized using a bullet blender and then proteins are precipitated with methanol/0.2 M ZnSO4 containing the internal standard D2,(13)C-tacrolimus. After vortexing and centrifugation, 100 µl of supernatant is injected into an online extraction column and washed with 5 ml/min of 0.1 formic acid/acetonitrile (7:3, v:v) for 1 min. Hereafter, the switching valve is activated and the analytes are back-flushed onto the analytical column (and separated using a 0.1% formic acid/acetonitrile gradient). Tacrolimus is quantified in the positive multi reaction mode (MRM) using a tandem mass spectrometer. The assay is linear from 1 to 50 ng/ml. Inter-assay variability (3.6%-6.1%) and accuracy (91.7%-101.6%) as assessed over 20 days meet acceptance criteria. Average extraction recovery is 95.5%. There are no relevant carry-over, matrix interferences and matrix effects. Tacrolimus is stable in dried blood spots at RT and at +4 °C for 1 week. Extracted samples in the autosampler are stable at +4 °C for at least 72 hr.
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Affiliation(s)
- Touraj Shokati
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Nicholas Bodenberger
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Holly Gadpaille
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Björn Schniedewind
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus
| | - Alexander A Vinks
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center
| | - Wenlei Jiang
- Food and Drug Administration (FDA), Center of Drug Evaluation Research - Office of Generic Drugs
| | | | - Uwe Christians
- iC42 Clinical Research and Development, University of Colorado, Anschutz Medical Campus;
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Abstract
Older adults represent a substantial number of the world population, which is set to grow considerably in the coming years. The health challenges faced by the older adults are unique. Several age-related changes in them make phlebotomy difficult. Application of dried blood has been demonstrated to be useful in the other similarly vulnerable population, the neonates. Similar approach of standardization and demonstration of use of dried blood spots (DBS) for analytes of interest in older adult population would be highly appreciated. There are very few reports of use of DBS in older adults. There are several potential areas of interest for older adults in which DBS assays are available but have not been applied for screening in them. This review describes a brief general overview of DBS, its advantages and disadvantages and potential use in disease diagnosis in older adults.
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60
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Analysis of metformin, sitagliptin and creatinine in human dried blood spots. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 997:218-28. [DOI: 10.1016/j.jchromb.2015.06.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 06/09/2015] [Accepted: 06/15/2015] [Indexed: 12/30/2022]
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61
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Dickerson JA, Sinkey M, Jacot K, Stack J, Sadilkova K, Law YM, Jack RM. Tacrolimus and sirolimus in capillary dried blood spots allows for remote monitoring. Pediatr Transplant 2015; 19:101-6. [PMID: 25414084 DOI: 10.1111/petr.12392] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/20/2014] [Indexed: 11/29/2022]
Abstract
Therapeutic drug monitoring of tacrolimus and sirolimus plays a significant role in the clinical follow-up of transplant patients receiving IMS therapy. Success of transplant and favorable patient outcome relies on maintaining adequate therapeutic drug levels. The purpose of this research is to assess the clinical utility of remote collection of DBS for immunosuppressant monitoring and compare the IMS level in paired collections of venous whole blood and DBS. Sirolimus and tacrolimus levels were clinically correlated in capillary blood collected from a finger poke with venous whole blood from pediatric, post-transplant patients. The participants took the dried blood spot card home with them with a pre-addressed, postage-paid envelope and mailed it back to the laboratory. Overall, a small but statistically significant negative bias was observed (-0.6 ng/mL, p = 0.0011). A chart review was performed to assess whether clinical management would have changed, and none of the cases revealed a clinically significant change. Sirolimus in DBS also correlated with venous levels. Overall, a small but statistically negative bias was observed (-0.8 ng/mL, p = 0.029). In summary, analysis of IMS levels in DBS is possible, and the difference noted between capillary and venous blood is within the clinically acceptable limits.
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Affiliation(s)
- Jane A Dickerson
- Department of Laboratories, Seattle Children's Hospital, Seattle, WA, USA; Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
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62
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Koster RA, Greijdanus B, Alffenaar JWC, Touw DJ. Dried blood spot analysis of creatinine with LC-MS/MS in addition to immunosuppressants analysis. Anal Bioanal Chem 2014; 407:1585-94. [DOI: 10.1007/s00216-014-8415-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 12/09/2014] [Accepted: 12/15/2014] [Indexed: 11/25/2022]
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63
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den Burger JCG, Wilhelm AJ, Chahbouni AC, Vos RM, Sinjewel A, Swart EL. Haematocrit corrected analysis of creatinine in dried blood spots through potassium measurement. Anal Bioanal Chem 2014; 407:621-7. [DOI: 10.1007/s00216-014-8291-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 10/17/2014] [Accepted: 10/22/2014] [Indexed: 11/30/2022]
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64
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Dried blood spot analysis to assess medication adherence and to inform personalization of treatment. Bioanalysis 2014; 6:2825-38. [DOI: 10.4155/bio.14.189] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Little research using dried blood spot samples to assess adherence to medication has been reported. The World Health Organisation estimates that only half of the patients in the developed world take their medication as prescribed. Additional costs to the healthcare provider include wasted medicines, avoidable additional hospital visits and non-optimum patient care. There is little evidence of information concerning medication adherence being made available to inform clinical decision making. In this article we explore the potential of the dried blood spot sample collection methodology as a means of identifying medication adherence to facilitate medicines optimization for a range of disparate diseases. Furthermore, the opportunity to personalize healthcare for different patients by assessing the clinically necessary therapeutic level of the relevant drugs is highlighted.
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65
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McCloskey LJ, Yoo JH, Stickle DF. Interpatient distributions of bloodspot area per fixed volume of application: Comparison between filter paper and non-cellulose dried matrix spotting cards. Clin Chim Acta 2014; 437:187-90. [DOI: 10.1016/j.cca.2014.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 07/19/2014] [Accepted: 07/21/2014] [Indexed: 01/27/2023]
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66
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Wilhelm AJ, den Burger JCG, Swart EL. Therapeutic drug monitoring by dried blood spot: progress to date and future directions. Clin Pharmacokinet 2014; 53:961-73. [PMID: 25204403 PMCID: PMC4213377 DOI: 10.1007/s40262-014-0177-7] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This article discusses dried blood spot (DBS) sampling in therapeutic drug monitoring (TDM). The most important advantages of DBS sampling in TDM are the minimally invasive procedure of a finger prick (home sampling), the small volume (children), and the stability of the analyte. Many assays in DBS have been reported in the literature over the previous 5 years. These assays and their analytical techniques are reviewed here. Factors that may influence the accuracy and reproducibility of DBS methods are also discussed. Important issues are the correlation with plasma/serum concentrations and the influence of hematocrit on spot size and recovery. The different substrate materials are considered. DBS sampling can be a valid alternative to conventional venous sampling. However, patient correlation studies are indispensable to prove this. Promising developments are dried plasma spots using membrane and hematocrit correction using the potassium concentration.
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Affiliation(s)
- Abraham J Wilhelm
- Department of Clinical Pharmacology and Pharmacy, VU University Medical Center, de Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands,
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67
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Supercritical fluid extraction as a preparation method for mass spectrometry of dried blood spots. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 969:199-204. [DOI: 10.1016/j.jchromb.2014.08.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 07/14/2014] [Accepted: 08/09/2014] [Indexed: 12/17/2022]
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68
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Étude de la stabilité de sept benzodiazépines, de la méthadone et du zolpidem dans des taches de sang. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2014. [DOI: 10.1016/j.toxac.2014.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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69
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Sharma A, Jaiswal S, Shukla M, Lal J. Dried blood spots: Concepts, present status, and future perspectives in bioanalysis. Drug Test Anal 2014; 6:399-414. [DOI: 10.1002/dta.1646] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/22/2014] [Accepted: 02/24/2014] [Indexed: 01/14/2023]
Affiliation(s)
- Abhisheak Sharma
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Academy of Scientific and Innovative Research; New Delhi India
| | - Swati Jaiswal
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Academy of Scientific and Innovative Research; New Delhi India
| | - Mahendra Shukla
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Academy of Scientific and Innovative Research; New Delhi India
| | - Jawahar Lal
- Pharmacokinetics & Metabolism Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Academy of Scientific and Innovative Research; New Delhi India
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70
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How effective is the use of DBS and DPS as tools to encourage widespread therapeutic drug monitoring? Bioanalysis 2014; 6:425-7. [DOI: 10.4155/bio.13.345] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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