ARUP's Laboratory Test Directory

0070053: Bone Specific Alkaline Phosphatase

Test Mnemonic: BSAP
Methodology: Chemiluminescent Immunoassay

Performed: Sun-Sat

Reported: Within 24 hours

Specimen Required:  
Collect: One 4 mL SST.

Transport: 0.5 mL serum, frozen. (Min: 0.25 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.2 mL serum, frozen.

Unacceptable Conditions: Plasma.  Hemolyzed specimens.

Stability: After separation from cells: Ambient: 2 hours; Refrigerated: 2 days; Frozen: 1 year

Reference Interval:
 
Age Male Female
7-9 years 48.6-140.4 µg/L 36.3-159.4 µg/L
10-12 years 48.8-155.5 µg/L 44.2-163.3 µg/L
13-15 years 27.8-210.9 µg/L 14.8-136.2 µg/L
16-17 years 15.3-126.8 µg/L 10.5-44.8 µg/L
25 years and older 6.5-20.1µg/L  
Premenopausal Female  4.5-16.9 µg/L
Postmenopausal Female  7.0-22.4 µg/L

Interpretive Data:
Liver alkaline phosphatase can affect the measurement of bone specific alkaline phosphatase in this assay.  Each 100 U/L of liver alkaline phosphatase contributes an additional 2.5 to 5.8 µg/L to the bone specific alkaline phosphatase result.



Note:
Reference intervals have not been established for children younger than 7 years of age or males 18-24 years.

CPT Code(s):
84080

 

 

 
All ARUP Sites:        www.aruplab.com     ·     www.arupconsult.com     ·     www.arup.utah.edu     ·     www.childx.org     ·     www.utahblood.org