| Ordering Code | 194 |
|---|---|
| Test Name | LDH, Total |
| Alias | Lactate Dehydrogenase LD |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Plasma in Lithium Heparin (Green), Serum in Plain (Red) |
| Optimum Volume | 0.5 mL |
| Transport Requirements | Oahu: Ambient Airline: Ambient |
| Specimen Stability | Ambient: 7 Days Refrigerated: 4 Days Frozen: 6 Weeks In connection with certain diseases (e.g. hepatopathy, diseases of skeletal muscle, malignant tumors), the LDH-4 and LDH-5 isoenzyme portions are increased and unstable in cooled and frozen samples; this may lead to an incorrect LDH value in samples collected from patients suffering from such diseases. |
| Rejection Criteria | Insufficient quantity, Specimen older than stability limits, Moderately hemolyzed |
| Avail. Stat | YES |
| Analytic Time | 1 Day |
| Methodology | UV Enzymatic |
Reference range(s)
The reference ranges listed below are valid on this date of June 29, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| LDH, Total | ALL | 135-250 | 135-250 | IU/L |