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HelpTest ID P2PHI Prostate-Specific Antigen (PSA) and [-2]ProPSA with Prostate Health Index (PHI), Serum
Specimen Required
Patient Preparation:
1. Specimens for testing should be collected prior to prostate manipulations such as digital rectal examination (DRE), prostatic massage, transrectal ultrasound (TRUS), and prostatic biopsy.
2. A 6-week waiting period between needle biopsy and specimen collection is recommended.
3. 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 (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Within 3 hours of collection, centrifuge, aliquot serum into a plastic vial, and refrigerate. Freeze sample within 24 hours of collection and send frozen.
Secondary ID
608462Useful For
As an aid in distinguishing prostate cancer from benign prostatic conditions in men aged 50 years and older with total PSA between 4.0 and 10.0 ng/mL and digital rectal examination findings that are not suspicious for cancer.
Testing Algorithm
This test begins with the analysis of prostate specific antigen (PSA), free PSA, and [-2]proPSA. If the initial PSA is between 4.0 and 10.0 ng/mL, then the percent free PSA and the prostate health index (phi) will be calculated and reported.
Specimen Type
Serum RedSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Frozen (preferred) | 150 days |
| Ambient | 24 hours | |
| Refrigerated | 24 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross icterus | Reject |
Reference Values
Females: Not applicable
PROSTATE-SPECIFIC ANTIGEN (PSA) MALES:
|
Age |
Reference range |
|
<40 Years |
≤2.0 ng/mL |
|
40-49 Years |
≤2.5 ng/mL |
|
50-59 Years |
≤3.5 ng/mL |
|
60-69 Years |
≤4.5 ng/mL |
|
70-79 Years |
≤6.5 ng/mL |
|
≥80 Years |
≤7.2 ng/mL |
PERCENT FREE PSA MALES:
When total PSA is in the range of 4-10 ng/mL
|
% Free PSA |
Probability of cancer |
|
≤10% |
56% |
|
11-15% |
28% |
|
16-20% |
20% |
|
21-25% |
16% |
|
>25% |
8% |
PROSTATE HEALTH INDEX (phi) MALES:
When PSA is in the range of 4-10 ng/mL
|
phi range |
Probability of cancer |
95% Confidence interval |
|
0-26.9 |
9.8% |
5.2-15.4% |
|
27.0-35.9 |
16.8% |
11.3-22.2% |
|
36.0-54.9 |
33.3% |
26.8-39.9% |
|
≥55.0 |
50.1% |
39.8-61.0% |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84153-Total PSA
84154-Free PSA
86316-[-2]ProPSA
Day(s) Performed
Monday through Saturday