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Test Code PTTA Activated Partial Thromboplastin Time (PTT)

Important Note

Specimen must arrive within 4 hours of draw.

Specimen Requirements

Container/Tube: Light blue-top (3.2% sodium citrate) tube

Specimen Volume: Full 4.5-mL tube of whole blood

Collection Instructions: Immediately invert tube and mix gently 8 times. Clotted blood is not acceptable. Avoid hemolysis.
Note: Label specimen appropriately.

 

Specimen Transport Temperature

Ambient

Performing Laboratory

The Valley Hospital

Reference Values

See lab report for reference range.

Test Classification and CPT Coding

85730