Test Overview
Test Methodology

Rate Colorimetric (pNPP Substrate)

Test Usage

Liver function test; evaluation of metabolic bone disease.

Reference Range *

Male: 1 mo. - 1 year: 120 - 470 IU/L, 1 - 9 years: 140 - 335 IU/L, 10-12 years: 130 - 420 IU/L, 13 - 14 years: 115 - 420 IU/L, 15 - 16 years: 80 - 300 IU/L, 17 - 150 years: 40 - 116.
Female: 1 mo. - 1 year: 120 - 470 IU/L, 1 - 9 years: 140 - 335 IU/L, 10-12 years: 130 - 420 IU/L, 13 - 14 years: 52 - 255 IU/L, 15 - 16 years: 50 - 116 IU/L, 17 - 150 years: 40 - 116.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

4 hours

Soft Order Code
ALK
MiChart Code
Alkaline Phosphatase
Synonyms
  • ALK
  • Alk Phos
  • ALKALINE PHOSPHATASE
Laboratory
Chemical Pathology
Section
Automation
STAT Availability

STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).

Specimen Requirements
Collection Instructions

Collect specimen in an SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. Hemolyzed samples should not be used for testing.

Alternate Specimen
Red top or Green top (sodium or lithium heparin) tube. [rev 11/09]
Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Billing
CPT Code
84075
Fee Code
20515
LOINC
6768-6
Resources