Preliminary comparative study of HBA1c measurement by IEX-HPLC Bio-Rad in dried blood spot vs. whole venous blood
Hadami et al.
The finding, in our words
In 40 participants, dried blood spots showed excellent agreement with venous blood for HBA1c measurement (LCCC 0.982, PCC 0.990, limits of agreement -0.45 to 0.48). The method demonstrated high repeatability (CV 1.13) and clinical conformity (K 0.80), suggesting capillary DBS sampling could replace venipuncture for diabetes monitoring in decentralised settings.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
Home DBS sampling gave testosterone results that agreed well with venous blood in men on intramuscular testosterone undecanoate, but showed falsely high values in those using topical gel, likely from skin contamination. Patients preferred home collection for its convenience, suggesting DBS is viable for decentralised monitoring of injectable testosterone if patients are taught proper technique.
Dried blood spot sampling matched venous serum performance for islet autoantibody detection and was considered minimally invasive and convenient by parents and stakeholders, supporting its use for decentralised screening in home or community settings.
Older adults achieved 98% adherence when self-collecting dried blood spots at home for inflammatory markers, with 97% of samples yielding valid results. Test-retest reliability was good (ICCs 0.70–0.76) and correlation with venous blood was strong (r=0.60–0.99), demonstrating that remote capillary sampling is a feasible and valid method for decentralised assessment of inflammation in older adults.
VAMS microsampling found no significant difference from venous blood for tacrolimus in paediatric patients; samples were stable for 14 days, with average difference between paired at-home samples of 0.12 ± 0.94 ng/mL.
The TASSO-M20 device for self-collected capillary blood demonstrated strong agreement with liquid whole blood for phosphatidylethanol (PEth) measurement (r²=0.988) and proved feasible and acceptable during virtual alcohol monitoring, causing less discomfort than finger stick methods. In a single participant tracked over time, PEth levels from the device aligned with urinary ethyl glucuronide and self-reported alcohol consumption.