Protein S, Free Antigen PSFA

Method(s) Microlatex Particle-Mediated Immunoassay
Specimen Required
Collect

One light-blue (sodium citrate) top tube. See collection and processing of coagulation specimens policy in this directory.

Transport 1.5 mL platelet-poor plasma, frozen. (Min: 1 mL)
Stability Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 3 months
Unacceptable Conditions

Serum. EDTA plasma. Hemolyzed specimens.

Schedule Mon - Sat
Billing Code 5011017
CPTCode 85306
Notes

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Preferred Specimen Collection Device(s)
Reference Interval

1-89 days: 15-55%
90-179 days: 35-92%
180-364 days: 45-115%
1-5 years: 62-120%
6-9 years: 62-130%
10-17 years: 60-140%
18 years and older Male: 74-147%
18 years and older Female: 55-123%

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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