Preferred Sample Type
D-Dimer
Specimen Volume
3.5 mL (Vacuette tubes) or 2.7mL (BD Vacutainer tubes)Specimen Transport
Standard transport to laboratorySample Preparation
Samples must be filled to the black fill line (Vacuette tubes) or the frosted line (BD Vacutainer tubes) indicated on the sample tube. Any sample filled above or below this level will be rejected and a repeat sample will be required
Turnaround Time
24 hoursSample Processing In Laboratory
Sample should be centrifugedSample Stability
12 hours from venepuncture (ideally received no later than 4 hours after collection)General Information
Test Availability:
D-Dimer is available on all sites.
Samples that meet the following criteria will not be processed:
- Haemolysed, clotted, underfilled or overfilled samples.
- Samples >12 hours old from the time of collection.
- Samples received from other hospital laboratories that have been frozen and thawed.
- Samples which fail the minimum data set.
Assay Limitations:
- D-Dimer results are not affected by haemoglobin up to 500 mg/dl, bilirubin up to 18 mg/dl, triglycerides up to 1327 mg/dl or rheumatoid factor up to 1400 iu/ml.
For more information please see https://labtestsonline.org.uk/tests/d-dimer
Reference Range
<250 ng/mL
Specifications
- EQA Status: NEQAS
- EQAS Scheme: Yes