Alkaline Phosphatase Isoenzymes
| Abbrev Code: | ALKI | ||
| Order Code: | LAB741 | Order Name: | Alkaline Phosphatase Isoenzymes |
| Order Instructions: | Order both ALKI and ALKP. Make separate aliquots for each. If the ALKP <200 U/L, cancel ALKI with the comment "Too low to fractionate". | ||
| Synonyms: | Alkaline Phosphatase, Heat Stable; Fractionated Alkaline Phosphatase; Alkaline Phosphatase, Total and Fractionated | ||
| Methodology: | Heat inactivation; enzymatic | ||
| CPT Codes: | 84080 x1, 84075 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-4 days. | ||
| Special Instructions: | Sent to the reference laboratory only if the total alkaline phosphatase is greater than 200 U/L. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 4 mL |
| Minimum\Peds Volume: | 2.2 mL |
| Container: | Red or gold (gel) Alternate Containers: Green (lithium heparin, gel), Green (sodium heparin, no gel), Red (no gel) |
| Patient Preparation: | Fasting sample recommended. |
| Causes for Rejection: | Specimens collected in EDTA, sodium fluoride, sodium citrate, or potassium oxalate. Grossly hemolyzed or lipemic specimens. |
Processing and Shipping
| Specimen Processing: | Centrifuge ASAP and aliquot 2 mL, 1 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | After separation from cells: 1 week at room temperature; 1 week refrigerated, 2 months frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
| Referral Lab number: | 21020 |
Interpretive
| Reference Range: |
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