Whether blood clots in a glass tube within 20 minutes.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Whether blood clots in a glass tube within 20 minutes. Why it is done: Snakebite, to detect venom that stops clotting. generated by SI from cited sources · general information, not a diagnosis · consult a health professional
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references
Snakebite, to detect venom that stops clotting.
Done immediately at the health facility. Laboratory-specific; see the reference range on your report. High or positive may mean: Clots normally. Low or negative may mean: Blood does not clot: venom effect, antivenom needed. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
⚠️ Reference ranges vary by lab, age and sex — always use the range printed on your own report.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
Why is 20-minute whole blood clotting test (20WBCT) done?
Snakebite, to detect venom that stops clotting.
Do I need to prepare or fast for 20-minute whole blood clotting test (20WBCT)?
Done immediately at the health facility. Laboratory-specific; see the reference range on your report. High or positive may mean: Clots normally. Low or negative may mean: Blood does not clot: venom effect, antivenom needed. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
SI text CC BY 4.0; decoder reference data (cited per range); LOINC codes free with attribution (notice included).
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references