Inpatient and Outpatient Orderable

Prostatic Acid Phosphatase

Synonyms

ACIDPHOS
LAB11156
PAP
PAP2
PROSTATIC ACID PHOSPHATASE, SERUM

Cerner Name

Clinical Info

An adjunct in the evaluation of possible prostatic malignancy and useful in monitoring therapeutic progress
This test is not the same as Acid Phosphatase.
Values obtained with different assays should not be used
interchangeably in serial testing. It is recommended that only
one assay method be used consistently to monitor each
patient's course of therapy. This procedure does not provide
serial monitoring; it is intended for one-time use only.

Specimen Sources

Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous

Specimen Types

Blood

Container

Red Top Tube

Collection Instructions

Container/Tube: Gold Top Tube
Specimen: 0.5 mL serum (0.3 mL min)
Transport Temperature: Frozen

Specimen Volume

0.5 mL serum (0.3 mL min)

Transport Instructions

Refrigerated

Specimen Stability

3 Hours Room Temperature
24 Hours Refrigerated
6 Months Frozen

Methodology

Immunochemiluminometric assay (ICMA)

Days Performed

TAT: 3-4 Days

Performing Laboratory

LabCorp

CPT

84066

LOINC Code: 20420-6

PDM

5900130

Only Orderable at Locations:

Orderable Everywhere

Results

Component Name	Base Name	Common Name	External Name
PROSTATIC ACID PHOSPHATASE	PROACIDPHO	PROSTATIC ACID PHOSPHATASE	Prostatic Acid Phosphatase

Result Interpretation

0−3.5 ng/mL

Prostatic acid phosphatase has been used as a tumor marker ever since the observation by Gutman in 1938¹ that elevated levels of this enzyme are found in patients with metastatic prostate cancer. PAP determination in conjunction with PSA measurements is useful in assessing the prognosis of prostate cancer.² Measurement of two markers allows identification of prostate cancer patients who have an elevation of PAP but not of PSA, and thus help monitoring the course of disease and response to treatment. PAP is more specific than PSA and less false-positives are seen due to benign prostatic hyperplasia.

Forms

Technical Bulletin Prostatic Acid Phosphatase Discontinued Test 02-01-2025

LAB11156

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