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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. Test performed in North Campus Laboratory. Centrifuge upon receipt and deliver to the Modular. Completed specimens are stored refrigerated for 5 days. 

Specimen Transport Temperature


LOINC Code Information

Name LOINC Code
Alkaline Phosphatase 6768-6