Alkaline Phosphatase (AKP)

Department: Chemistry
Test Synonym(s): LAB112, AKP, Alkaline Phosphatase Blood
CPT Codes: 84075
Methodology: Enzymatic: Para-nitrophenyl Phosphate
Reference Range: 0-14 days: 90-273 U/L; 15 days-<1 yr: 134-518 U/L; 1-<10yrs: 156-369 U/L; 10-<13 yrs: 141-460 U/L; 13-<15 yrs: 62-280 U/L (female), 127-517 U/L (male); 15-<17 yrs: 54-128 U/L (female), 89-365 U/L (male); 17-<19 yrs: 59-164 U/L (female), 54-128 U/L (male); 19-150yrs: 40-150 U/L (Pediatric Reference Ranges only verified for serum, see CALIPER Study in Colantonio DA, et.al Clin Chem 2012;58(5):854-868.)
Tube Type: Light green PST (Lithium Heparin with gel) tube
Specimen: Plasma
Alternate Specimen: Red top (no gel)
Pediatric Requirements: 1 light green microtainer
Volume: 1 mL plasma
Minimum Volume: 1 light green top
Temperature: Separate within 1 hour and store/ship @ ambient temperature until delivery.
Stability: Room temperature: 7 days; Refrigerated: 7 days; Frozen: 2 months
Reasons for Rejection: Hemolysis, Lipimia, QNS, improper collection and specimen handling
Days Performed: Daily
Times Performed: Continuous
TAT: STAT: 1 hour; ROUTINE: 2 hours after receiving in lab
Special Instructions: Interferences from Medications or endogenous substances may affect results

---

Search Help

---

Search Options for the Test Directory:

1. Enter the test name in the Keyword search field.
Hint: You can also enter any part of the test name to expand the search.
(Example: you can type "west" or "sed" or "rate" to find Westergren Sedimentation Rate)

2. Enter the Vanderbilt Test Code, if known.

3. Choose one of the letter boxes to display a list of all test names and keywords starting with that letter.

If you are unable to find a test in our directory, please contact VPLS at
1-800-551-5227 or e-mail emily.k.thompson@vumc.org.