2013 · Bioanalysis · paywalled
De Kesel et al.
The canonical review of the haematocrit effect, decomposing it into recovery bias, matrix effects, spot-size/homogeneity variation and analyte-distribution bias.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
2026
In AML and CLL, 91% of VAMS venetoclax results fell within 20% of plasma after individualised haematocrit correction; in home sampling, 18 of 21 patients self-sampled independently and 76% of returned samples were analysable, which shows home microsampling is workable, though the authors ask for multicentre validation.
Clinical Validation of Venetoclax Volumetric Microsampling in Leukemia, with Whole-Blood-to-Plasma Conversion and Self-Microsampling Feasibility — Levens et al., Clinical Pharmacokinetics (paywalled) · source ↗
2026
This review found that volumetric microsampling devices, such as Mitra, HemaPEN, HemaXis DB10, and Tasso-M20, overcome haematocrit bias, whilst Telimmune plasma separation cards enable direct plasma collection without centrifugation. These technologies support patient-centric, decentralised sampling, though the authors note that clinical validation remains limited across different drugs and patient populations.
A Review of Blood-Based Microsampling Devices for Patient-Centered Application in Therapeutic Drug Monitoring — Huhn & Scherf-Clavel, Therapeutic drug monitoring (paywalled) · source ↗
2026
Capillary dried blood spots, after haematocrit-dependent conversion, showed good agreement with plasma for 25-hydroxyvitamin D quantification, with 90 per cent of results within 20 per cent of plasma and substantial to almost perfect agreement in status classification, supporting reliable home self-collection for large-scale vitamin D monitoring.
Clinical validation of a DBS-based LC-MS/MS method for 25-hydroxyvitamin D: from lab sampling to home sampling — Heughebaert et al., Clinical chemistry and laboratory medicine (paywalled) · source ↗
2026
Capillary finger-stick dried blood spots demonstrated strong analytical agreement with venous serum for prostate-specific antigen (R² = 0.987) and remained stable for 31 days across a wide temperature range. This less invasive microsampling approach enables at-home self-collection, supporting decentralised screening and tele-diagnostics for prostate cancer.
Accessible Prostate-Specific Antigen Testing through Finger-Stick Dried Blood Spots and Routine Laboratory Analyzers — van Vugt et al., The journal of applied laboratory medicine (paywalled) · source ↗
2026
Finger-stick dried blood spots produce creatinine measurements that correlate strongly with venous plasma (R² = 0.97), with 91% sensitivity and 96% specificity for detecting reduced eGFR. Creatinine stays stable in dried spots for up to one month at refrigerated or frozen temperatures, supporting accurate home-based kidney function screening, patient follow-up, and medication management.
Creatinine measurement from finger stick dried blood spots with a routine chemistry analyzer for estimation of GFR — van Dam et al., Clinical chemistry and laboratory medicine (paywalled) · source ↗