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Maroto-García J, Deza S, Fuentes-Bullejos P, Fernández-Tomás P, Martínez-Espartosa D, Marcos-Jubilar M, Varo N, González Á. Analysis of common biomarkers in capillary blood in routine clinical laboratory. Preanalytical and analytical comparison with venous blood. Diagnosis (Berl) 2023; 10:281-297. [PMID: 36877154 DOI: 10.1515/dx-2022-0126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/13/2023] [Indexed: 03/07/2023]
Abstract
OBJECTIVES Remote self-collected capillary blood samples have been proposed as alternative to venous blood samples as an aid in telemedicine. The aim of this work is to compare the preanalytical and analytical performance of these two types of samples and to study the stability of common measurands in capillary blood. METHODS Capillary and venous blood samples were collected in parallel from 296 patients in serum tubes to analyze 22 common biochemistry magnitudes after centrifugation and in EDTA tubes to analyze 15 hematologic magnitudes. Quality of the preanalytical process was assessed applying the model of quality indicator. 24 h stability at room temperature was studied by obtaining paired capillary samples. A questionnaire of assessment was conducted. RESULTS Mean hemolysis index was higher in capillary samples compared to venous blood samples (p<0.001). Regression analysis and difference analysis showed no bias for all studied biochemistry parameters and hematologic parameters, except mean corpuscular volume (MCV), between capillary and venous blood samples. Regarding sample stability, percentage deviation was higher than the corresponding minimum analytical performance specification for ferritin, vitamin D, hematocrit, MCV, mean corpuscular hemoglobin concentration, platelets distribution wide, mean platelet volume and basophils. Finger pricking was perceived as less painful (p<0.05) than venipuncture in participants who undergo more than one blood test per year. CONCLUSIONS Capillary blood can be used as an alternative to venous blood for the studied parameters in automated common clinical analyzers. Cautious should be taken if samples are not analyzed within 24 h from the collection.
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Affiliation(s)
| | - Sara Deza
- Biochemistry Department, Clínica Universidad de Navarra, Pamplona, Spain
| | | | | | | | | | - Nerea Varo
- Biochemistry Department, Clínica Universidad de Navarra, Pamplona, Spain
| | - Álvaro González
- Biochemistry Department, Clínica Universidad de Navarra, Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
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Hosseini B, Dasari H, Smyrnova A, Bourassa C, Leng J, Renaud C, Ducharme FM. Concordance in COVID-19 serology, bone mineralization, and inflammatory analytes between venous and self-collected capillary blood samples exposed to various pre-analytical conditions. Ann Clin Biochem 2023:45632231159279. [PMID: 36750422 PMCID: PMC10030887 DOI: 10.1177/00045632231159279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND The COVID-19 has led to a significant increase in demand for remote blood sampling in clinical trials. This study aims to ascertain the concordance between venous versus capillary samples, processed immediately or exposed to various pre-analytical conditions. METHODS Participants (≥12 years old) provided a venous blood sample (processed immediately) and capillary samples allocated to one of the following conditions: processed immediately or exposed to 12-, 24-, or 36-h delays at room temperature or 36-h delays with a freeze-thaw cycle. The analytes of interest included SARS-CoV-2 IgG, 25-hydroxy vitamin D (25(OH)D), alkaline phosphate (ALP), calcium (Ca), phosphate (Ph), and c-reactive protein (CRP). Paired samples were considered interchangeable if they met three criteria: minimal within-subject mean difference, 95% of values within desirable total errors, and inter-class correlation (ICC) > 0.90. RESULTS 90 participants (44.1% male) were enrolled. When comparing rapidly processed venous with capillary samples, 25(OH)D, ALP, and CRP met all three criteria; SARS-CoV-2 IgG met two criteria (mean difference and ICC); and Ca and Ph met one criterion (mean difference). When considering all three criteria, concentrations of 25(OH)D, CRP, and ALP remained unchanged after delays of up to 36 h; SARS-CoV-2 IgG met two criteria (mean difference and ICC); Ca and Ph met one criterion (mean difference). CONCLUSION These findings suggest that remote blood collection devices can be used to measure anti-SARS-CoV-2 IgG, 25(OH)D, CRP, and ALP. Further analysis is required to evaluate the interchangeability between venous and capillary testing in Ca and Ph levels, which are more sensitive to pre-analytical conditions.
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Affiliation(s)
- Banafshe Hosseini
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Harika Dasari
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Anna Smyrnova
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Claude Bourassa
- Optilab Montréal-Sainte-Justine, Departments of Pediatrics and Microbiology, Infectiology and Immunology, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Jing Leng
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Christian Renaud
- Optilab Montréal-Sainte-Justine, Departments of Pediatrics and Microbiology, Infectiology and Immunology, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
| | - Francine M Ducharme
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, 25461Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, Canada
- Departments of Pediatrics and of Social and Preventive Medicine, 5622University of Montréal, Montreal, QC, Canada
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3
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Moittié S, Graham PA, Barlow N, Dobbs P, Liptovszky M, Redrobe S, White K. Comparison of 25-hydroxyvitamin D concentration in chimpanzee dried blood spots and serum. Vet Clin Pathol 2020; 49:299-306. [PMID: 32441404 DOI: 10.1111/vcp.12863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 10/04/2019] [Accepted: 11/06/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Dried blood spots (DBS) are used in human medicine to measure total 25-hydroxyvitamin D (25-OHD) in the blood. However, this easy and affordable sampling technique has not been evaluated in primates to measure vitamin D concentrations. OBJECTIVES We aimed to compare 25-OHD measurements in chimpanzee serum at two different laboratories and determine the precision and accuracy of the DBS method by comparing DBS and serum results. METHODS Blood samples from 17 captive chimpanzees were collected, and 25-OHD3 and 25-OHD2 were measured in serum at two accredited laboratories using liquid chromatography-tandem mass spectrometry. The same analytes were measured on DBS cards, and results were compared with that of serum. Data were assessed using the Spearman correlation, Deming regression, and Bland-Altman analyses. RESULTS The correlation coefficient between the two measurements in serum was rs = .51 (P = .04), and the mean bias was -1.25 ± 14.83. When comparing 25-OHD concentrations measured in DBS and serum at the same laboratory, the rs was 0.7 (P = .002), and the mean bias was 1.42 ± 14.58. Estimated intra-assay and inter-assay coefficients of variation for DBS results were 6% and 12.6%, respectively. CONCLUSIONS Although substantial analytical variability was found in 25-OHD measurements regardless of the sample type, the identification of both constant and proportional error and wider limits of agreement with the DBS technique makes the interpretation of DBS results challenging, especially for values close to clinical cut-off points. The DBS and serum methods were not interchangeable, and further studies are needed to validate DBS samples for vitamin D measurements in chimpanzees.
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Affiliation(s)
- Sophie Moittié
- School of Veterinary Medicine and Science, University of Nottingham, Leicestershire, UK.,Twycross Zoo, East Midland Zoological Society, Atherstone, UK
| | - Peter A Graham
- School of Veterinary Medicine and Science, University of Nottingham, Leicestershire, UK
| | - Nicola Barlow
- Sandwell and West Birmingham NHS Hospital, Clinical Biochemistry Department, Birmingham, UK
| | - Phillipa Dobbs
- Twycross Zoo, East Midland Zoological Society, Atherstone, UK
| | | | - Sharon Redrobe
- Twycross Zoo, East Midland Zoological Society, Atherstone, UK
| | - Kate White
- School of Veterinary Medicine and Science, University of Nottingham, Leicestershire, UK
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Ducharme FM, Jensen M, Mailhot G, Alos N, White J, Rousseau E, Tse SM, Khamessan A, Vinet B. Impact of two oral doses of 100,000 IU of vitamin D 3 in preschoolers with viral-induced asthma: a pilot randomised controlled trial. Trials 2019; 20:138. [PMID: 30777118 PMCID: PMC6379931 DOI: 10.1186/s13063-019-3184-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 01/07/2019] [Indexed: 02/08/2023] Open
Abstract
Background New evidence supports the use of supplemental vitamin D in the prevention of exacerbation of asthma; however, the optimal posology to sufficiently raise serum levels while maximising adherence is unclear. The objective was to ascertain the efficacy of high-dose vitamin D3 in increasing serum vitamin D in preschoolers with asthma and provide preliminary data on safety and efficacy outcomes. Methods We conducted a 7-month, triple-blind, randomised, placebo-controlled, pilot trial of children aged 1–5 years with viral-induced asthma. Participants were allocated to receive two oral doses of 100,000 IU vitamin D3 (intervention) or identical placebo (control) 3.5 months apart, once in the fall and once in the winter. Serum 25-hydroxyvitamin D (25OHD) was measured by tandem mass spectrometry at baseline, 10 days, 3.5 months, 3.5 months + 10 days, and 7 months. The main outcome was the change in serum 25OHD from baseline (Δ25OHD) over time and at 3.5 and 7 months; other outcomes included the proportion of children with 25OHD ≥ 75 nmol/L, safety, and adverse event rates. Results Children (N = 47) were randomised (intervention, 23; control, 24) in the fall. There was a significant adjusted group difference in the Δ25OHD (95% confidence interval) of 57.8 (47.3, 68.4) nmol/L, p < 0.0001), with a time (p < 0.0001) and group*time interaction effect (p < 0.0001), in favour of the intervention. A significant group difference in the Δ25OHD was observed 10 days after the first (119.3 [105.8, 132.9] nmol/L) and second (100.1 [85.7, 114.6] nmol/L) bolus; it did not reach statistical significance at 3.5 and 7 months. At 3.5 and 7 months, respectively, 63% and 56% of the intervention group were vitamin D sufficient (≥ 75 nmol/L) compared to 39% and 36% of the control group. Hypercalciuria, all without hypercalcaemia, was observed in 8.7% of intervention and 10.3% of control samples at any time point. Exacerbations requiring rescue oral corticosteroids, which appear as a promising primary outcome, occurred at a rate of 0.87/child. Conclusion Two oral boluses of 100,000 IU vitamin D3,once in the fall and once in the winter, rapidly, safely, and significantly raises overall serum vitamin D metabolites. However, it is sufficient to maintain 25OHD ≥ 75 nmol/L throughout 7 months in only slightly more than half of participants. Trial registration ClinicalTrials.gov, NCT02197702 (23 072014). Registered on 23 July 2014. Electronic supplementary material The online version of this article (10.1186/s13063-019-3184-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Francine Monique Ducharme
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, Research Centre, Sainte-Justine University Health Centre, Montreal, Quebec, Canada. .,Department of Pediatrics, University of Montreal, Sainte-Justine University Health Centre, 3175 Côte Ste-Catherine, Montreal, Quebec, H3T 1C5, Canada. .,Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada.
| | - Megan Jensen
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, Research Centre, Sainte-Justine University Health Centre, Montreal, Quebec, Canada
| | - Geneviève Mailhot
- Department of Nutrition, University of Montreal, Montreal, Quebec, Canada
| | - Nathalie Alos
- Department of Social and Preventive Medicine, University of Montreal, Montreal, Quebec, Canada
| | - John White
- Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - Elizabeth Rousseau
- Department of Pediatrics, University of Montreal, Sainte-Justine University Health Centre, 3175 Côte Ste-Catherine, Montreal, Quebec, H3T 1C5, Canada
| | - Sze Man Tse
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, Research Centre, Sainte-Justine University Health Centre, Montreal, Quebec, Canada.,Department of Pediatrics, University of Montreal, Sainte-Justine University Health Centre, 3175 Côte Ste-Catherine, Montreal, Quebec, H3T 1C5, Canada
| | - Ali Khamessan
- Euro-Pharm International Canada, Montreal, Quebec, Canada
| | - Benjamin Vinet
- Clinical Research and Knowledge Transfer Unit on Childhood Asthma, Research Centre, Sainte-Justine University Health Centre, Montreal, Quebec, Canada
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Predicting serum vitamin D concentrations based on self-reported lifestyle factors and personal attributes. Br J Nutr 2018; 120:803-812. [PMID: 30079855 DOI: 10.1017/s000711451800199x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Evidence supports the role of vitamin D in various conditions of development and ageing. Serum 25-hydroxyvitamin D (25(OH)D) is the best indicator for current vitamin D status. However, the cost of its measurement can be prohibitive in epidemiological research. We developed and validated multivariable regression models that quantified the relationships between vitamin D determinants, measured through an in-person interview, and serum 25(OH)D concentrations. A total of 200 controls participating in a population-based case-control study in Montreal, Canada, provided a blood specimen and completed an in-person interview on socio-demographic, reproductive, medical and lifestyle characteristics and personal attributes. Serum 25(OH)D concentrations were quantified by liquid chromatography-tandem MS. Multivariable least squares regression was used to build models that predict 25(OH)D concentrations from interview responses. We assessed high-order effects, performed sensitivity analysis using the lasso method and conducted cross-validation of the prediction models. Prediction models were built for users and non-users of vitamin D supplements separately. Among users, alcohol intake, outdoor time, sun protection, dose of supplement use, menopausal status and recent vacation were predictive of 25(OH)D concentrations. Among non-users, BMI, sun sensitivity, season and recent vacation were predictive of 25(OH)D concentrations. In cross-validation, 46-47 % of the variation in 25(OH)D concentrations were explained by these predictors. In the absence of 25(OH)D measures, our study supports that predicted 25(OH)D scores may be used to assign exposure in epidemiological studies that examine vitamin D exposure.
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Jensen ME, Ducharme FM, Théorêt Y, Bélanger AS, Delvin E. Data in support for the measurement of serum 25-hydroxyvitamin D (25OHD) by tandem mass spectrometry. Data Brief 2016; 8:925-9. [PMID: 27508244 PMCID: PMC4961221 DOI: 10.1016/j.dib.2016.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/09/2016] [Accepted: 07/08/2016] [Indexed: 11/29/2022] Open
Abstract
This article provides data and a method related to a research paper entitled “Assessing vitamin D nutritional status: is capillary blood adequate?” (Jensen et al., 2016) [1]. Circulating 25OHD, the accepted biomarker of the vitamin D nutritional status, is routinely measured by automated immunoassays, that although may be performed in hospital central laboratories, often suffer from a lack of specificity with regards to the different vitamin D metabolites, “Measurement of circulating 25-hydroxyvitamin D: a historical review” (Le Goff et al., 2015) [2]. Mass spectrometry offers this specificity. This article describes the performance of an in-house tandem mass spectrometry method for the individual measurement of 25OHD3, 25OHD2 and 3-épi-25OHD3.
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Affiliation(s)
- M E Jensen
- Centre for Asthma and Respiratory Diseases, School of Biomedical Sciences & School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - F M Ducharme
- Departments of Pediatrics and Social and Preventive Medicine, University of Montreal, Montreal, Canada; Clinical Research and Knowledge Transfer Unit, Research Centre, CHU Ste-Justine, Montreal, Canada
| | - Y Théorêt
- Clinical Pharmacology Unit, Department of Clinical Biochemistry, CHU Ste-Justine, Canada; Department of Pharmacology, University of Montreal, Montreal, Canada
| | - A-S Bélanger
- Department of Clinical Biochemistry, CHU Ste-Justine, Canada
| | - E Delvin
- Gatroenterology, Hepatology & Nutrition Division, CHU Ste-Justine Research Centre, University of Montreal, Montreal, Canada
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