Specimen Collection Manual and Test Catalog

1.0 mL aliquot of serum; minimum 0.75 mL.

1. Specimens for testing should be drawn prior to prostate manipulations such as digital rectal examination (DRE), prostatic massage, transrectal ultrasound (TRUS), and prostatic biopsy.
2. Specimens should not be collected from patients receiving therapy with high biotin (vitamin B7) doses (ie, >5 mg/day) until at least 8 hours following the last biotin administration.

Spin down within 3 hours of collection and separate serum from cells.

Frozen.

150 days.

Collection in serum-separator tube (SST). Received room temperature or refrigerated. Gross hemolysis. Grossly icteric.

This test begins with the analysis of prostate-specific antigen (PSA). If the PSA is between 2.0 and 10.0 ng/mL, then the reflex test (PHI13) will be performed. If the initial PSA is between 2.0 and 10.0 ng/mL, then free PSA and [-2]ProPSA will be reported. If the initial PSA is between 4.0 and 10.0 ng/mL, then the percent free PSA and prostate health index (phi) will be calculated and reported. If the initial PSA is between 2.0 and 4.0 ng/mL, then the percent free PSA and prostate health index (phi) will not be calculated or reported.

P2PSA, PHI, Pro-2-PSA. Quest test code 36372. Mayo test code PHI11, PHIS