PT-INR Test: Prothrombin Time (PT) test measures the time taken for blood plasma to clot as well as the level of blood-clotting proteins. If you are taking the blood-thinning medication, the prothrombin time is shown as an international normalised ratio (INR). The test is performed to check for liver damage or cirrhosis, assess any risk of internal bleeding and monitor the effectiveness of blood thinner medicines. It is also done to diagnose blood disorders.

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APTT Test: Activated Partial Thromboplastin Time (APTT) test evaluates the blood’s ability to clot properly. It measures the time taken for a clot to form in a blood sample after the addition of specific reagents. This test is particularly significant in diagnosing bleeding disorders, such as Hemophilia and monitoring patients on anticoagulant therapy, like Heparin.

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Processing Update

PT-INR & APTT tests are now ready for processing at all 30 of our Regional Processing Labs across India.

Pricing Update

We have drastically reduced B2B rates and increased B2C rates for PT-INR and APTT tests so you can earn higher margins.

Points to Remember for Coagulation Tests

✅ Samples should reach lab within 8 hrs of collection

✅ Samples should be properly packed

✅ Temperature must be maintained at 2-8℃

Target Crowd

• Surgeons
• Cardiologists
• Cardiovascular surgeons
• MD Medicine doctors

Sample Collection Guide for PT-INR & APTT tests

Vial Type: Sodium Citrate Tube

Sample volume: 2.7 mL for 3 mL tube

For all tubes:

• For a 5 mL tube containing 0.5 mL of 3.2% sodium citrate, the minimum blood sample requirement is 4.5ML
• For a 3 mL tube containing 0.3 mL of 3.2% sodium citrate, the minimum blood sample requirement is 2.7mL 
• For a 2 mL tube containing 0.2 mL of 3.2% sodium citrate, the minimum blood sample requirement is 1.8 mL

Importance of correct sample volume:

• Ensure that collection tubes are filled properly and comply with a 9:1% blood-to-anticoagulant ratio.
• The collection tube should be adequately filled to ensure correct blood-to-anticoagulant ratio.
• If the anticoagulant is diluted by blood, the clotting time may appear longer than it actually is.
• Similarly, if the anticoagulant is too concentrated relative to the blood, factor concentration may appear lower than it is.

Vial images for your reference

The sample has to be filled until the mark exactly.

The volume of blood to be added in the tube mentioned in vial (2.7 mL)