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Test Code ALPI Alkaline Phosphatase Isoenzymes, Serum


Specimen Required


Only orderable as part of a profile. For more information see ALKP / Alkaline Phosphatase, Total and Isoenzymes, Serum.

 

Patient Preparation: Fasting (8 hours) required

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Within 2 hours of collection, centrifuge the specimen.

2. For red top tubes, immediately aliquot into a plastic vial.

3. For serum gel tubes, serum may sit on gel refrigerated but must be aliquoted within 7 days.


Secondary ID

622349

Useful For

Aid in the diagnosis and treatment of liver, bone, intestinal, and parathyroid diseases

 

Determining the tissue source of increased alkaline phosphatase (ALP) activity in serum

 

Differentiating between liver and bone sources of elevated ALP

Method Name

Only orderable as part of a profile. For more information see ALKP / Alkaline Phosphatase, Total and Isoenzymes, Serum.

 

Electrophoresis

Reporting Name

Alkaline Phosphatase Isoenzymes, S

Specimen Type

Serum

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 14 days
  Ambient  7 days
  Refrigerated  7 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus Reject

Reference Values

Only orderable as part of a profile. For more information see ALKP / Alkaline Phosphatase, Total and Isoenzymes, Serum.

 

Ages:

≤17 years: Reference values have not been established for patients younger than 18 years.

≥18 years:

Liver %: 30.2-74.7

Liver U/L: 15.8-71.9

Bone %: 23.8-68.3

Bone U/L: 12.0-56.7

Intestine %: ≤22.5

Intestine U/L: ≤12.6

Day(s) Performed

Tuesday through Saturday

Report Available

3 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

CPT Code Information

84080

LOINC Code Information

Test ID Test Order Name Order LOINC Value
ALPI Alkaline Phosphatase Isoenzymes, S 12805-8

 

Result ID Test Result Name Result LOINC Value
622367 Alkaline Phosphatase Isoenzymes, S 12805-8
622369 Liver Percent 15015-1
622368 Liver 1779-8
622371 Bone Percent 15013-6
622370 Bone 1777-2
622373 Intestine Percent 15014-4
622372 Intestine 1778-0