A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

PT Mixing Study

Test Code
LAB321


Alias/See Also
1231500016


CPT Codes
85610 85390

Includes
PT NORMAL CONTROL
PT PATIENT
PT 1:1 MIX
INCUBATED PT CONTROL
INCUBATED PT PATIENT
INCUBATED PT 1:1 MIX
PT MIXING STUDY INTERPRETATION


Preferred Specimen
Blue Top (Sodium Citrate) tube


Minimum Volume
Fully collected Blue top tube


Instructions
Fully collect a Blue Top (sodium citrate) tube. Mix sample immediately by gentle inversion at least six times.


Transport Temperature
Refrigerated: 4 hours
Frozen: >4 hours


Specimen Stability
Refrigerated: 4 hours
Frozen: >4 hours


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Underfilled tubes will not be accepted


Methodology
ACL TOP 750

Reference Range
Males/Females:
9.4-12.5 seconds


Performing Laboratory
LITTLE ROCK LABORATORY


Last Updated: August 26, 2026


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.