TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: PHI11    
Prostate Health Index (phi), Serum

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

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.

Specimen Type Describes the specimen type validated for testing

Serum Red

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation:

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.

Collection Container/Tube: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions: Spin down within 3 hours of draw and separate serum from cells.

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-Prostate Health Index (phi), Serum Test Request (T792)

-Oncology Test Request (T729)

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

0.75 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Gross hemolysis Reject
Gross icterus Reject
Other SST Serum Reject

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
Serum RedFrozen150 days