TEST DIRECTORY | MIDx Labs

TOTAL PROSTATE SPECIFIC ANTIGEN (TPSA)

Measures total circulating PSA, used to screen for and monitor prostate cancer as well as assess response to treatment.

LIS TEST CODE: PSA

CPT CODE: 84153

ALIASES: Total PSA, PSA (Prostate Specific Antigen)

METHODOLOGY: Chemiluminescent Microparticle Immunoassay (CMIA)

SPECIMEN:

- Type: Serum

- Container: Gold Top (SST) Vacutainer

- Minimum Volume Required: 1 mL

- Storage/Handling: Allow 30 minutes for blood to clot, then centrifuge specimen at 3500 RPM for 10 minutes. Maintain specimen in the refrigerator until testing can be performed.

- Stability: Room Temperature (20-25 °C): Not Accepted

Refrigerated (2-8 °C): 1 day

Frozen (-20 °C or colder): Not Accepted

- Turnaround Time: 24 hours from receipt.

Special Instructions: Insufficient processing of sample, or disruption of the sample during transportation, may cause depressed results.

REJECTION REASONS: QNS, Gross Hemolysis, Gross Lipemia, Contamination, Stability Violation, Expired Container, Incorrect Container

REFERENCE RANGES:

Males (ng/mL)

1 - 39 years of age: <= 2.00

40 - 49 years of age: <= 2.50

50 - 59 years of age: <= 3.50

60 - 69 years of age: <= 4.50

70 - 79 years of age: <= 6.50

>= 80 years of age: <= 7.20