APTT & PTTK Coagulation Tests Explained

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What is APTT?

Activated Partial Thromboplastin Time (APTT) measures how long blood takes to clot via the intrinsic pathway. It helps evaluate bleeding disorders and monitor heparin therapy.

What is PTTK?

Partial Thromboplastin Time (PTTK/PTT) assesses the coagulation cascade and is often ordered alongside APTT before surgery or when investigating abnormal bleeding.

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Frequently asked questions

Do coagulation tests need special handling?

Yes — samples require careful collection and timely processing. CoreLab phlebotomists follow SOPs for coagulation studies with home collection in Delhi NCR.

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