APTT Mixing Study (PTT Mixing Study)

Message

Verify nursing order is correct.
AZ locations send to SQL via STAT courier if ordered as ES or ST

Test Code

APTT MIX

Alias/See Also

Performed at SQL, test code 15748

CPT Codes
85730

Instructions

Follow the double spin process to produce platelet poor plasma. Plasma, Citrate Plt-Poor Two 2.7 mL filled light blue-top (3.2% Na citrate) tubes. Centrifuge without delay. Transfer only top 2/3 of plasma (plasma must be platelet free) into two plastic vials (1.0 mL minimum of plasma into each plastic vial). If other coagulation tests are ordered, freeze a minimum of three plastic vials. Place in a specimen bag with a frozen label applied. Freeze immediately.

See link below for specimen details, methodology, setup schedule and reference ranges.

Additional Information
APTT Mixing Study - SQL
Partial Thromboplastin Time Mixing Study

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.