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Test ID PACP Prostatic Acid Phosphatase, Serum

Useful For

Aiding in predicting recurrence after radical prostatectomy for clinically localized prostate cancer


Following response to androgen ablation therapy, when used in conjunction with prostate-specific antigen

Method Name

Automated Chemiluminescent Immunometric Assay

Reporting Name

Prostatic Acid Phosphatase, S

Specimen Type


Specimen Required

Patient Preparation: For 12 hours before specimen collection, do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Collection Container/Tube: 

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

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) Performed

Monday, Wednesday, Friday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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

Test Classification

This test has been cleared, approved, or is exempt by the US 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.

Report Available

Same day/1 to 3 days

NY State Approved