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Lab Manual for Moffitt-Long and Mount Zion

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Alkaline Phosphatase

Item Value
Approval req'd? No
Available Stat? Yes
Test code ALKP
Performed by Parnassus & Mt. Zion Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Spectrophotometric, kinetic
(aminomethyl propanol/nitrophenol phosphate)
Container type Gold top or Light Green top
Amount to Collect 1 mL blood Click here for Microdetermination info
Sample type Serum or plasma
Preferred volume 0.5 mL serum or plasma
Min. Volume 0.2 mL serum or plasma Click here for Microdetermination info
Units U/L
Normal range
Age Male Female
< 1 month 75-316 U/L 48 - 406 U/L
1 month - 11 months 82 - 383 U/L 124 - 341 U/L
1 - 4 years 110 - 302 U/L 60 - 321 U/L
5 - 9 years 110 - 341 U/L 118 - 360 U/L
10 - 11 years 103 - 373 U/L 103 - 373 U/L
12 - 13 years 83 - 382 U/L 83 - 382 U/L
14 - 15 years 67 - 372 U/L 67 - 372 U/L
16 - 18 years 47 - 171 U/L 45 - 171 U/L
≥18 years 31 - 95 U/L 31 - 95 U/L


Note:
1. Normal range for infants 0 to <1 year adopted from "Pediatric Reference Ranges", 6th edition, AACC Press, 2007, method 3
(p-Nitrophenylphosphate)
2. Normal range for children 1 to less than 16 years old adopted from Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345
3. Normal range for children 16 to <18 years old adopted from "Pediatric Reference Ranges", 6th edition, AACC Press, 2007, method 3 (p-Nitrophenylphosphate)
4. Normal range for adults was determined by testing 271 male and female healthy blood donors at UCSF.
Synonyms Alk phos; AlkP; Alk Ptase
Stability Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week
Turn around times STAT 1 hour, Routine 4 hours
Additional information Alkaline phosphatase isoenzymes are unreliable; use GGT to distinguish bone from liver enzyme if the source of elevation is unclear.
CPT coding 84075
LOINC code 6768-6
Last Updated 7/17/2013 12:20:02 PM
Entry Number 225
Lab Procedure Link Click here for Procedure

If you have additional questions regarding this test, please call: 415-353-1667

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