Laboratory Medicine
Test Directory / Alkaline Phosphatase Isoenzymes
Alkaline Phosphatase Isoenzymes
Brown clotted serum, gel barrier
| Test | Alkaline Phosphatase Isoenzymes |
|---|---|
| Common Abbreviations | ALPI |
| Profile | NA |
| Tube type | Brown clotted serum, gel barrier |
| Clinical Indication | ALP originates in approximately equal proportions from the liver and skeletal system. Approximately 25% of healthy individuals also have intestinal ALP which accounts for 10% of the total ALP in a fasting specimen. Increases in total ALP are either due to physiological causes or are caused by diseases of the liver or bone. Physiological increases are found in pregnancy, in growing children, and post prandially in individuals with blood groups B and O. Separation allows for the identification of the ALP isoenzyme which is causing the increase in the total ALP. |
| Specimen Type | Blood |
| Sample type | Serum |
| Minimum Volume | 0.5mL If requesting more than 10 tests please send an additional brown clotted serum sample. |
| Special Precautions | No special requirements |
| Stability | 7 days at 2-25°C |
| Turnaround Time | Inpatient: 2 weeks Outpatient/ GP: 2 weeks |
| Laboratory | York |
| Reference Interval | Interpretative result provided |
| Limitations | Severe haemolysis, jaundice or lipaemia may interfere. |
| Notes |
