Factor X Functional Test
Also known as: Stuart-Prower factor assay, Factor X assay
Factor X Functional Test test available at DNA Labs India for ₹6,500. Uses Electromechanical Clot Detection on Whole blood samples. Results in Results are typically available next day after sample receipt at the lab.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Gottipati Vemkateswarlu
Consultant Hematologist · Reg: AMC4946
Last reviewed: September 7, 2026
Overview
To diagnose Factor X deficiency, evaluate blood clotting function, monitor anticoagulant therapy, and assess bleeding disorders.
- Test Code
- 540
- Price
- ₹6,500
- Sample Type
- Whole blood
- Result Time
- Results are typically available next day after sample receipt at the lab.
- Fasting Required
- Yes (10 hours)
- Method
- Electromechanical Clot Detection
Sample Collection
Overnight fasting is preferred. Duly filled Coagulation Requisition Form (Form 15) is mandatory. Discontinue Heparin for 1 day and Oral Anticoagulants for 7 days prior, with physician consent.
Method: Venipuncture
Laboratory Analysis
3 mL whole blood collected via venipuncture into a Blue Top (Sodium Citrate) tube. Mix thoroughly by inversion.
Report Delivery
Transport to lab within 4 hours. If delayed, prepare platelet-poor plasma (PPP) by centrifugation, freeze immediately, and ship frozen without thawing.
Timeline: Results are typically available next day after sample receipt at the lab.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose Factor X deficiency, evaluate blood clotting function, monitor anticoagulant therapy, and assess bleeding disorders.
How to Prepare
- Fasting for 10-12 hours before sample collection
- Complete Coagulation Requisition Form (Form 15)
- Inform lab staff about any medications
- Avoid strenuous activity before test
Doctor's Notes
Reviewed by Dr Gottipati Vemkateswarlu — MBBS, MD (Haematology) · Reg. No. AMC4946
"Factor X deficiency is a rare coagulation disorder that can lead to significant bleeding complications. The Factor X Functional Test is crucial for accurate diagnosis and management, helping to tailor treatment plans and monitor therapy effectiveness."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed samples
- Incorrect tube type
- Insufficient sample volume
- Delayed transport without PPP preparation
Understanding Your Results
Low Factor X Activity (<50%)
May indicate Factor X deficiency, liver disease, vitamin K deficiency, or anticoagulant effect.
Normal Factor X Activity (50-150%)
Normal clotting function. Further tests may be needed if symptoms persist.
High Factor X Activity (>150%)
May occur in hypercoagulable states. Clinical correlation recommended.
If you experience unexplained bleeding, bruising, or other symptoms of coagulation disorders. Also, consult for abnormal test results or before starting/stopping anticoagulants.
Limitations
- ⚠May not detect all types of Factor X deficiencies
- ⚠Requires proper sample collection and handling
- ⚠Results should be interpreted in clinical context
Risks & Considerations
- ●Minor bruising at puncture site
- ●Rare infection
- ●Fainting during blood draw
Interfering Factors
- ●Use of anticoagulants like heparin (discontinue 1 day prior)
- ●Oral anticoagulants (discontinue 7 days prior)
- ●Recent blood transfusions
- ●Sample handling errors
Compare With Similar Tests
| Test | Factor X Functional Test | Prothrombin Time (PT) | Activated Partial Thromboplastin Time (aPTT) | Factor X Antigen Test | Thrombin Time |
|---|---|---|---|---|---|
| Comparison | Factor X Functional Test |
Frequently Asked Questions
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