What it is
A prothrombin time test measures how many seconds it takes for a clot to form in a blood sample; INR standardizes comparison across methods.[1]
Why it matters
PT/INR helps clinicians understand clotting-factor pathways and blood-thinner monitoring context.[1]
What it affects
- PT/INR is interpreted with medicines, liver context, bleeding/clotting history, and the reason the test was ordered.[1]
Interpretation traps
- BioConst does not interpret INR targets or anticoagulant dosing.[1]