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Test Code ALKP Alkaline Phosphatase

Specimen and Container/Tube

Specimen Type: Plasma

Preferred Specimen: Li-Heparin Mint Green Top

Other Acceptable specimens: Serum/Red Top, Serum/Gold Top

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

Collect specimen per standard collection procedure and send to laboratory immediately. 

 

UCMC Offsite and UC MedLab Outreach Instructions: 

  • Samples should be centrifuged within 2 hours of collection.
  • Centrifuge specimens at >2500 x g for 10 minutes at room temperature.
  • Aliquot sample into plastic transport tube containing a minimum of 0.2 mL of specimen.
  • Samples must be sent room temperature at 15-25oC.

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits. 
  • Specimens that are clotted or grossly hemolyzed.
  • Specimens that were transported unspun/whole blood and draw time is greater than 6 hours.

Reference Values

Test

Age

Sex

Reference Range

Alkaline Phosphatase

< 1 month

All

150 - 420 IU/L

Alkaline Phosphatase

1 month - 18 years

All

100 - 390 IU/L

Alkaline Phosphatase

19 - 60 years

All

30 - 120 IU/L

Alkaline Phosphatase

 > 60 years

All

50 - 150 IU/L

Critical Values

Analyte

Unit

Low

High

Age

N/A

N/A

N/A

N/A

N/A

CPT Codes

84075

LOINC Codes

6768-6

Volume

Preferred Volume: 0.5 mL

Minimum Volume: 0.2 mL

Specimen Stability

Storage Temperature

Stability

Room temperature

7 days

Refrigerated

7 days

Frozen

2 months

Collection Instructions

Collect specimen per standard laboratory collection procedures. 

 

Test Components

Alkaline Phosphatase
 

Clinical Indications

Useful in the diagnosis and treatment of liver, bone, intestinal and parathyroid disease.

Methodology

Colorimetric Assay Spectrophotometric (Roche Diagnostics)

Additional Information

Results should always be assessed in conjunction with patient's medical history, clinical examination and other
findings.

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

 

STAT Turnaround Time: 1 hour

Routine Turnaround Time: 4 hours

Testing Schedule: 24/7

Synonyms/Keyword Search

ALP, Alk Phos, ALKP

Last Review Date

8/14/2024