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Test Code 2609 Alkaline Phosphatase Activity, Total, Plasma

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Enzymatic (p-Nitrophenylphosphate)

Literature Reference:

Package insert: Alkaline phosphatase ALP2 IFCC reagent. Roche Corporation, 2/2015.

Specimen Requirements

Note: This test is also available as part of #6961 Comprehensive Metabolic Panel (CMP) and #6965 Hepatic Function Panel. See Common Panel Test Combinations in Special Instructions to avoid duplicate test requests when multiple panels are ordered.


Specimen Type: Plasma

Container/Tube: Mint-green top (lithium heparin)

Specimen Volume: Full tube


Day(s) Test Set Up

Monday through Sunday

Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory

Reference Values

0-3 years: 110-320 Units/L
3-9 years: 140-420 Units/L
9-15 years: 130-550 Units/L
15-20 years: 70-260 Units/L

≥20 years: 40-130 Units/L

Literature References:

Tietz, Burtis CA, Ashwood ER, Bruns DE eds: Textbook of Clinical Chemistry and Molecular Diagnostics 5th ed: Chapter 22, p. 565, Elsevier, St. Louis, MO 2012.

Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only
Alternate Tube:

1 dark-green top (lithium heparin) tube

1 plain red top tube
Analyte Stability:

See Analyte Stability Chart in Special Instructions.

Laboratory Processing Instructions:

Test performed in BJH Core Lab.  Processed by automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days. 

Specimen Transport Temperature


LOINC Code Information

Name LOINC Code
Alkaline Phosphatase 6768-6