Quick highlights
- Supports clot evaluation pathways (DVT/PE) when used appropriately
- A negative result can help rule out clot in selected low-risk contexts
- Not specific—can be elevated in infection, surgery, pregnancy, inflammation
- No fasting; citrate plasma sample
- Must be interpreted with clinical probability scores and imaging
- Not a substitute for emergency evaluation in severe symptoms
- Anticoagulants and recent surgery can affect interpretation
- Home blood collection available in many service areas
- Clear emergency red flags included
- SEO coverage: D-dimer test, clot blood test, DVT PE screening blood test
What’s included
Preparation
- Seek emergency care first for severe chest pain/breathlessness
- No fasting required
- Disclose pregnancy, recent surgery/trauma, infection, cancer history if relevant
- Disclose anticoagulants and timing of last dose
- Collect citrate plasma sample via trained phlebotomist
- Download report from <a href='/my-account/'>View reports</a>
- Review result with clinician; imaging may be required
- Do not self-start blood thinners based on result
FAQs
A blood test measuring fibrin breakdown products, used in clot evaluation pathways.
No.
No. It is not specific and can be elevated in many conditions; clinicians confirm with imaging if needed.
In selected low-risk scenarios, a negative D-dimer can help rule out clot when used with clinical scoring.
Yes; levels can rise during pregnancy, affecting interpretation.
Yes; recent surgery or injury can raise D-dimer.
Citrate plasma (blue-top tube).
Often same day or within 24 hours.
Yes in many serviceable areas, but emergency symptoms need urgent care.
Sudden chest pain, severe breathlessness, coughing blood, fainting, or one-leg swelling with pain.
No. Treatment decisions require clinician evaluation and imaging confirmation.
Ultrasound for DVT and CT pulmonary angiography for PE depending on clinical scenario.
Download from <a href='/my-account/'>View reports</a>.
When clinical probability is high or there are many confounding conditions; clinicians may proceed to imaging directly.
Notes
D-dimer is sensitive but not specific for thrombosis.
