Protein S Antigen Total & Free
| Abbrev Code: | PSTF | ||
| Order Code: | LAB6591 | Order Name: | Protein S Antigen Total and Free |
| Methodology: | Microlatex Particle - Mediated Immunoassay | ||
| CPT Codes: | 85306 x1, 85305 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Fri; results are reported within 7-10 days. | ||
| Associated Links: | Specimen Collection and Processing for Coagulation Specimens |
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Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | Three 2.7 mL (in 3 mL tube) - fill to fill line on the tube |
| Minimum\Peds Volume: | Two 2.7 mL (in 3 mL tube) - fill to fill line on the tube |
| Container: | Blue Na Citrate, 3.2% - fill to fill line on tube |
| Collection Instructions: | Patient should be off warfarin for at least 2 weeks before drawing sample. |
| Causes for Rejection: | Overfilled or underfilled tubes. Specimen other than citrated plasma. |
Processing and Shipping
| Specimen Processing: | See link to Specimen Collection and Processing of Coagulation Specimens for platelet-poor plasma. Aliquot a minimum of 1 mL each into 2 separate aliquot tubes. Freeze. |
| Shipping Instructions: | Ship on dry ice. |
| Test Performed at or Referral Lab | Lab Sendouts (Versiti) |
| Referral Lab number: | 1042 |
Interpretive
| Reference Range: |
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