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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.-3 p.m.

Saturday; 6 a.m.-3 p.m.

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