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Test Code LAB10528 Prostatic Acid Phosphatase (PAP), Serum

Reporting Name

Prostatic Acid Phosphatase, S

Useful For

Predicting recurrence after radical prostatectomy for clinically localized prostate cancer and following response to androgen ablation therapy, when used in conjunction with prostate-specific antigen

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type


Specimen Required


Preferred: Red top

Acceptable: Serum gel

Specimen Volume: 1 mL

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 7 days
  Frozen  180 days

Reference Values

≤2.1 ng/mL

Day(s) and Time(s) Performed

Monday through Friday; 5 a.m.-3pm., Saturday; 6 a.m.-3pm

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
PACP Prostatic Acid Phosphatase, S 20420-6


Result ID Test Result Name Result LOINC Value
PACP Prostatic Acid Phosphatase, S 20420-6

Reject Due To

Gross hemolysis Reject
Gross lipemia OK

Method Name

Automated Chemiluminescent Immunometric Assay

Secondary ID