3 mL plasma from a PPT (plasma separator) tube. Centrifuge sample and separate plasma from cells within 24 hours of collection. Transfer plasma to a polypropylene transport tube. Clearly label tube as EDTA plasma. Refrigerate.
Note: if the sample was initially transported in the PPT tube following centrifugation, the sample must be re-centrifuged at 600 x g for 5 minutes prior to pour-off/aliquoting.
When multiple tests are ordered, submit separate tube for this test.