Prothrombin time (PT) — lab reference
Some search terms matchedReagent-specific. Ask your clinician to read this result with INR, liver function, vitamin K, and anticoagulants.
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What’s searchable?Reagent-specific. Ask your clinician to read this result with INR, liver function, vitamin K, and anticoagulants.
Reagent-specific. Heparin monitoring may use different targets or anti-Xa.
Acute-phase reactant; functional and antigenic assays differ.
Age-adjusted and assay-specific diagnostic strategies may apply. Not a stand-alone thrombosis diagnosis.
Reagent-specific; affected by heparin, direct thrombin inhibitors, and fibrinogen abnormalities.
Morning collection preferred for men. Method and age matter; confirm unexpected low values.
Mayo example age 20-24: M 5.25-20.7; F <0.13-1.08. Declines with age and is method-dependent.
Estrogen, thyroid, liver disease, insulin resistance, age, and medications affect SHBG.
Female cycle-phase detail is on the next section. LC-MS/MS is preferred at low concentrations.
Female phase detail is on the next section. Exogenous progesterone route/timing matters.
Ask your clinician to read this result with testosterone or estradiol, FSH, cycle phase, and pituitary context.
Ask your clinician to read this result with age, ovarian status, testosterone/estradiol, and pituitary context.
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