Partial Thromboplastin Time, Activated (PTT)
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Information
Partial Thromboplastin Time, Activated – The aPTT is a screening test that will detect deficiencies or inhibitors to the intrinsic (Factors VIII, IX, XI and XII) and common (Factors II, V, X and fibrinogen) pathway coagulation factors. Synonyms: APTT, PTT
Methodology
Photo-Optical Clot Detection
Specimen Required
Blue-top (sodium citrate) tube. Specimen Requirements: Plasma Citrated. Stability: Ambient – 4 Hour(s), Frozen – 14 Day(s)
CPT Code(s)
85730