Laboratory Medicine
Test Directory / Fluid Lactate Dehydrogenase
Fluid Lactate Dehydrogenase
Urine monovette or white topped universal (no additives)
| Test | Fluid Lactate Dehydrogenase |
|---|---|
| Common Abbreviations | FLLDH |
| Profile | NA |
| Tube type | Urine monovette or white topped universal (no additives) |
| Clinical Indication | Fluid LDH measurement may be used to distinguish between transudate and exudate fluid formation when the fluid protein result is equivocal. |
| Specimen Type | Fluid |
| Sample type | Fluid |
| Minimum Volume | 1 mL |
| Special Precautions | Please visually inspect samples before sending for analysis and indicate the site of collection. Samples which are very turbid or thick may be rejected as there is a risk of damage to laboratory equipment |
| Stability | No specific data available for fluids. LDH is stable in serum for 4 days at 2-8°c and for 7 days at 15-25°c |
| Turnaround Time | Inpatient: 6 hours Outpatient/ GP: 24 hours |
| Laboratory | York and Scarborough |
| Reference Interval | Light's criteria states a sample is an exudate if fluid protein / serum protein ratio > 0.5, fluid LDH / serum LDH ratio > 0.6 or fluid LDH is greater than two-thirds of upper limit of the serum reference range. For further information please refer to http://www.acbi.ie/downloads/guidelines-of-body-fluids.pdf |
| Limitations | Fluid composition tends to be very variable, and the exact mixture of components in a fluid sample can have unpredictable effects on measurement of any one analyte. Our laboratory methods are NOT CE-marked or validated for analysis of fluids, and no specific quality control materials are available. ALL results must be interpreted with caution. |
| Notes |
