Protein S Activity

CERNER / EPIC MNEMONIC: PRO S ACT
POE DESCRIPTION: PROTEIN S ACTIVITY; PRO S ACT
CPT CODE:

85306

DAYS PERFORMED:

Once a week on Thursday

SPECIAL INSTRUCTIONS:

This test cannot be added onto an existing sample more than 4 hrs old.

CONTAINER TYPE:

Blue citrate tube

COLLECTION:

See Section - " Specimen Collection Guidelines" - Coagulation Specimens

SPECIMEN REQUIREMENTS: Blood, 4.5 mL draw
REJECTION CRITERIA: Specimen hemolyzed; Hct >55%; underfilled tube (QNS)
MINIMUM VOLUME:

1 mL plasma from properly filled tube

HANDLING INSTRUCTIONS: Transport the specimen to the laboratory as soon as possible. Specimen MUST be received within 4 hours after collection. Separate plasma immediately if delay in delivery of specimen is anticipated. Centrifuge specimen for 20 minutes to obtain platelet-poor plasma. Transfer at least 1 mL plasma to a plastic tube(s) and freeze at -60°C.
REFERENCE RANGE: 55-145%
LAST UPDATED:

10/12/2011

TEST SYNONYM(S):Protein S Functional