Alkaline Phosphatase Isoenzymes Synonyms ALP Isoenzymes; Fractionated Alkaline Phosphatase; Isoenzymes, ALKP

Test Includes Quantitation of total alkaline phosphatase and isoenzyme activity

Laboratory Core Laboratory

Referral to Reference Laboratory

Request Form Routine Blood Requisition

Phone (212) 305-8600

Availability Daily, 24 hours

Specimen Blood

Volume Full tube

Minimum Volume 2 mL serum

Container Gold top tube

Storage Instructions If not delivered on the same day of draw, separate serum and refrigerate.

Patient Preparation Patient should be fasting.

Reference Range

Liver isoenzyme: 24-158 units/L

Bone isoenzyme: 24-146 units/L

Intestinal isoenzyme: 0-22 units/L

Use Evaluate the contribution of liver, bone, placental, and Regan isoenzymes to the total alkaline phosphatase level

Methodology Chemical inhibition and differential inactivation