ARUP's Laboratory Test Directory

Protein S, Total Antigen : 0030112

Mnemonic: PROT S

Methodology: Microlatex Particle-Mediated Immunoassay
Performed: Sun-Sat
Reported: 1-2 days
Specimen Required: Collect: Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.

Specimen Preparation: Transfer 2 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)

Storage/Transport Temperature: Frozen.

Unacceptable Conditions: Serum. Hemolyzed specimens.

Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: 24 hours; Frozen: 2 weeks
Reference Interval:
1-4 days: 12-60%
5-29 days: 22-78%
30-89 days: 33-93%
90-179 days: 54-118%
180-364 days: 55-119%
1-5 years: 54-118%
6-10 years: 41-114%
11 years and older: Females: 63-126%; Males: 84-134%
Interpretive Data: Patients on oral anticoagulants may have decreased protein S values. Patients should be off oral anticoagulant therapy for two weeks for accurate measurement of protein S.
CPT Code(s): 85305
 
 

 

 

 
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