Sign in →

Test ID ALKP Alkaline Phosphatase, Total and Isoenzymes, Serum


Necessary Information


Patient's age and sex are required.



Specimen Required


Patient Preparation:

Fasting: 8 hours, required

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 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

622157

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

Specimen Type

Serum

Specimen Stability Information

Specimen Type Temperature Time
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

ALKALINE PHOSPHATASE

Males

0-14 days: 83-248 U/L

15 days-<1 year: 122-469 U/L

1-<10 years: 142-335 U/L

10-<13 years: 129-417 U/L

13-<15 years: 116-468 U/L

15-<17 years: 82-331 U/L

17-<19 years: 55-149 U/L

≥19 years: 40-129 U/L

Females

0-14 days: 83-248 U/L

15 days-<1 year: 122-469 U/L

1-<10 years: 142-335 U/L

10-<13 years: 129-417 U/L

13-<15 years: 57-254 U/L

15-<17 years: 50-117 U/L

≥17 years: 35-104 U/L

 

ALKALINE PHOSPHATASE ISOENZYMES

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

CPT Code Information

84075

84080

Forms

If not ordering electronically, complete, print, and send a Kidney Transplant Test Request with the specimen.