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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Lactate Dehydrogenase (LD)
Test Code593
CPT Codes
83615
Preferred Specimen
1 mL serum collected in a serum separator tube (SST)
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in a sodium or lithium heparin (green-top) tube
Instructions
Do not refrigerate or freeze.
For fluids, please use test codes:
17589X, LD, Pleural Fluid
17588X, LD, Peritoneal Fluid
17658X, LD, Synovial Fluid
17647X, LD, Pericardial Fluid
1687X LD, CSF
*Fluids other than those listed are not acceptable.
For fluids, please use test codes:
17589X, LD, Pleural Fluid
17588X, LD, Peritoneal Fluid
17658X, LD, Synovial Fluid
17647X, LD, Pericardial Fluid
1687X LD, CSF
*Fluids other than those listed are not acceptable.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 14 days
Refrigerated: 48 hours
Frozen: Unacceptable
Refrigerated: 48 hours
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis
Methodology
Spectrophotometry (SP)
Setup Schedule
Set up: Sun-Fri a.m. and nights, Sat a.m.; Report available: Next day
Reference Range
| Male (U/L) | Female (U/L) | |
| <1 Month | 125-735 | 145-765 |
| 1-11 Months | 170-450 | 190-420 |
| 1-3 Years | 155-345 | 165-395 |
| 4-6 Years | 155-345 | 135-345 |
| 7-10 Years | 140-270 | 140-270 |
| 11-13 Years |
110-250 |
110-250 |
| 14-17 Years | 110-230 | 110-230 |
| 18-49 Years | 100-220 | 100-200 |
| >49 Years | 120-250 | 120-250 |
Clinical Significance
Elevations in serum lactate dehydrogenase occur from myocardial infarction, liver disease, pernicious and megaloblastic anemia, pulmonary emboli, malignancies, and muscular dystrophy. Since lactic dehydrogenase is present in many body tissues, it's diagnosis usefulness is limited. Tissue specificity may be enhanced by isoenzyme analysis.
