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Specimen Collection Manual and Test Catalog

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ALKALINE PHOSPHATASE

Geisinger Epic Procedure Code:  LAB1546    Geisinger Epic ID:  14395

SPECIMEN COLLECTION
Specimen type: 

Plasma or Serum


Preferred collection container: 
Specimen required: 

2 mL of serum or plasma; minimum 0.2 mL.



SPECIMEN PROCESSING
Processing instructions: 

Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.


Transport temperature: 

Refrigerated (preferred temperature).


Specimen stability: 

Plasma (PST): Room temperature: 12 hours. Refrigerated: 12 hours. 
Serum (SST): Room temperature: 7 days. Refrigerated: 7 days. Frozen: 2 months.


Rejection criteria: 

Stability limits exceeded.



TEST DETAILS
Reference interval: 
0 to <15 days83-248 U/L
15 days to 1 year122-469 U/L
1 to < 10 years142-335 U/L
10 to <13 years129-417 U/L
13 to < 15 yearsF: 57-254 U/L; M: 116-468 U/L
15 to < 17 yearsF: 50-117 U/L; M: 82-331 U/L
17 to <19 yearsF: 45-87 U/L; M: 55-149 U/L
19 years and up35-130 U/L

CPT code(s):  84075
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Alkaline phosphatase.


Methodology: 
Spectrophotometric (Colorimetric)
Synonyms: 

Alk phos, ALKP


Clinical significance: 

Serum alkaline phosphatase levels are of interest in the diagnosis of hepatobiliary disorders and bone disease associated with increased osteoblastic activity. Hepatic versus bone elevations can be distinguished by isozenzyme analysis.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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