Jan 30, 2024 · A D-dimer test measures how much D-dimer protein is in the blood. This protein is present when blood clots break down. A typical range is 0-0.50 milligrams per liter (mg/L) of blood.

Jan 17, 2026 · Patients with D-dimer levels between 250-500 ng/mL occupy a gray zone where clinical probability assessment becomes particularly important.

Aug 17, 2024 · In general, values below 500 ng/mL are considered normal and often help rule out blood clots in low-risk patients. Slightly elevated results around 500-1,000 ng/mL may appear with minor …

Nov 9, 2021 · There are several different methods for testing the level of D-dimer in your blood, so there’s no one universal “normal” range. Your lab results will provide information indicating if your D …

A normal D-dimer test result is negative and means problems with blood clotting are unlikely. If the D-dimer test is used to check if treatment is working for disseminated intravascular coagulation (DIC), a …

Dec 6, 2025 · A normal D-dimer level generally indicates that significant blood clot formation and breakdown are not currently occurring. The standard threshold for a normal result in a non-pregnant …

Apr 17, 2024 · Chair, The Department of Pathology & Laboratory Medicine ... ROUTINE COAGULATION TESTING REFERENCE RANGES ... * PT and PTT ranges for ages < 6 months: …

May 30, 2024 · In general, a normal range for D-Dimer levels in the blood of adults should be under 500 ng/mL or 0.5 µg/mL FEU (Fibrinogen Equivalent Units). These values can be adapted for older people.

Mar 25, 2025 · Typically, a D-Dimer value below 500 ng/mL (nanograms per milliliter) or 0.5 µg/mL (micrograms per milliliter) is considered normal. Some laboratories may use age-adjusted values, …

Nov 18, 2025 · Reference Range The reference concentration of D-dimer is < 500 µg/L or ≤ 0.5 mg/L fibrinogen equivalent unit (FEU). [1] D-dimer is measured in two different units: FEU and D-dimer …