Lab ranges
6 entries
Activated partial thromboplastin time (aPTT) — lab reference
Reagent-specific. Heparin monitoring may use different targets or anti-Xa.
D-dimer — lab reference
Age-adjusted and assay-specific diagnostic strategies may apply. Not a stand-alone thrombosis diagnosis.
Fibrinogen — lab reference
Acute-phase reactant; functional and antigenic assays differ.
INR — lab reference
Normal range only. Warfarin therapeutic targets are indication-specific.
Prothrombin time (PT) — lab reference
Reagent-specific. Ask your clinician to read this result with INR, liver function, vitamin K, and anticoagulants.
Thrombin time — lab reference
Reagent-specific; affected by heparin, direct thrombin inhibitors, and fibrinogen abnormalities.
About these ranges
These are Dr. Purser’s adult reference ranges. Units, symptoms and health history matter when you discuss a result with your clinician.
