Key result
Platelet aggregation varies by processing time and donor sex, peaking at concentrations above 100,000/microliter.
Why the study?
Platelet aggregation responses vary with platelet concentration, time after sample collection, and sex, affecting interpretation of test results.
How do time, platelet concentration, and sex affect the human platelet aggregation response to ADP and collagen?
Observational
How do time, platelet concentration, and sex affect the human platelet aggregation response to ADP and collagen?
Platelet aggregation testing results are significantly influenced by platelet concentration, processing time, and donor sex, highlighting the need for sex-matched controls and standardized processing.
Answers are grounded in this paper and cite their sources.
Requires standardized conditions for platelet concentration, time, and sex in aggregation assays; leaves open human validation before clinical adoption.
The platelet aggregation responses induced by adenosine diphosphate (ADP) and collagen were characterized by parameters defining rate and extent of reaction. Values were compared on the basis of platelet concentration, time elapsed between sample collection and test performance, and sex of donors. Rate and extent of aggregation varied as a function of platelet concentration. Maximal responses were obtained for platelet concentrations greater than 100,000/microliter. Results from samples processed after 90 min of incubation at room temperature were consistently and significantly lower than those obtained from samples processed immediately. ADP-induced aggregation responses elicited by samples from male and female normal donors differed significantly. This indicates that comparisons between normal and patient results should be made with sex-matched individuals to avoid erroneous interpretations.
No takes yet. Share an insight, caveat, or question.
Roper et al. (1979) conducted an observational in Healthy volunteers. Time elapsed, platelet concentration, and sex was evaluated on Platelet aggregation response induced by ADP and collagen. Platelet aggregation responses varied significantly by platelet concentration, time elapsed before processing, and donor sex, with maximal responses at concentrations >100,000/microliter.
Synapse has enriched 10 related papers. Consider them for comparative context: