Protein S Activity
Abbrev Code: | XMISC | ||
Order Code: | LAB4909 | Order Name: | Send Outs Misc Test |
Methodology: | Clotting assay | ||
CPT Codes: | 85306 x1 | ||
Turnaround Time: | Specimens are sent to reference laboratory Mon-Fri; results are reported within 7 days. | ||
Associated Links: | Specimen Collection and Processing for Coagulation Specimens |
Collection Instructions
Specimen: | Blood |
Optimal Volume: | 2.7 mL (in 3 mL tube) - filled to fill line on the tube |
Minimum\Peds Volume: | 1.8 mL (in 2 mL tube) - filled to fill line on the tube |
Container: | Blue Na Citrate, 3.2% - fill to fill line on tube |
Collection Instructions: | Patients should be off warfarin for at least 4 weeks before drawing a sample. The assay kit manufacturer has demonstrated the assay to be unaffected by levels of unfractionated heparin or low molecular weight heparin up to 2 IU/mL, but the results may be artifactually elevated in samples containing dabigatran or rivaroxaban. |
Causes for Rejection: | Overfilled or underfilled tubes. Specimen other than citrated plasma. |
Processing and Shipping
Specimen Processing: | See link to Specimen Collection and Processing for Coagulation Specimens for platelet-poor plasma. Aliquot 0.5 mL, 0.3 mL minimum. |
Shipping Instructions: | Ship on dry ice. |
Test Performed at or Referral Lab | Lab Sendouts (Versiti) |
Referral Lab number: | 1041 |
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