Lactate Dehydrogenase, Isoenzymes
0020413
Ordering Recommendation
Mnemonic
LDISO
Methodology
Quantitative Enzymatic/Electrophoresis
Performed
Sun-Sat
Reported
1-2 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
- Patient Preparation
- Collect
- Serum Separator Tube (SST) or Plain Red.
- Specimen Preparation
- Do not refrigerate or freeze. Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.6 mL)
- Storage/Transport Temperature
- Room temperature.
- Unacceptable Conditions
- Hemolyzed specimens.
- Remarks
- Stability
- After separation of cells: Ambient: 1 week; Refrigerated: Unacceptable; Frozen: Unacceptable
Reference Interval
LD-1: 14-27%
LD-2: 29-42%
LD-3: 18-30%
LD-4: 8-15%
LD-5: 6-23%
Lactate Dehydrogenase, Total:
0-1 month: 200-465 U/L
2-17 months: 200-450 U/L
18 months-10 years: 165-430 U/L
11-16 years: 127-287 U/L
17 years and older: 105-230 U/L
LD-2: 29-42%
LD-3: 18-30%
LD-4: 8-15%
LD-5: 6-23%
Lactate Dehydrogenase, Total:
0-1 month: 200-465 U/L
2-17 months: 200-450 U/L
18 months-10 years: 165-430 U/L
11-16 years: 127-287 U/L
17 years and older: 105-230 U/L
Interpretive Data
Note
LD-1 and LD-2 are elevated in hemolyzed specimens and serum which has not been separated from cells. LD-3, LD-4, and LD-5 are labile at low temperatures, and are erroneously low in specimens that have been refrigerated or frozen.
Hotline History
N/A
CPT Code(s)
83625; 83615
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0020015 | Lactate Dehydrogenase - 1 | 2536-1 |
0020016 | Lactate Dehydrogenase - 2 | 2539-5 |
0020017 | Lactate Dehydrogenase - 3 | 2542-9 |
0020018 | Lactate Dehydrogenase - 4 | 2545-2 |
0020019 | Lactate Dehydrogenase - 5 | 2548-6 |
0020107 | Lactate Dehydrogenase, Total | 14804-9 |
Aliases
- Isoenzymes
- Isoenzymes of Lactate Dehydrogenase
- Isoenzymes, LD
- Lactate Dehydrogenase Isoenzymes, S
- LD
- LDH
- LDH Fractionation
- LDH Isoenzymes