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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Alkaline Phosphatase

Test Code(s): ALKP

CPT Code(s): 84075

Test Description: Included In: Comprehensive Metabolic Panel

Methodology: p-Nitrophenylphosphate

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.


Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: Preferred: 4 mL
Pediatrics: 0.4 mL

Sample Analyzed: Plasma or serum

Volume Required: Preferred: 1 mL
Pediatrics: 0.2 mL

Specimen Processing: Centrifuge.  If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to the laboratory. Transport with coolant pack if coming from outreach location.

Stability: Ambient: 8 hours
Refrigerated: 4 days
Frozen: 6 months at -20C


Interpretation

Reference Interval:

 

         Female  

Male  

Age(years) U/L   Age(years) U/L
0-10 75-375 0-9 75-375 
11 150-425 10 150-350 
12 150-375           11-13 150-450
13 50-325 14 150-400
14 50-250 15-16 50-300
15 50-175 17 50-225
16-17 50-150 18 50-175
18 and up 45-117 19 and up 45-117

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