Lactate Dehydrogenase (LDH) Isoenzymes
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Lactate Dehydrogenase (LD) Isoenzymes, Serum (Until 31 January, 2024)
Test ID: LDISO
Test
Aliases/Synonyms
Method
Electrophoresis Densitometry (LDI) & Photometric Rate (LD)
Report Includes
Lactate Dehydrogenase (LD); LD Iso - I (Heart); LD Iso - II; LD Iso - III; LD Iso - IV; LD Iso - V (Liver)
Specimens
Serum
You must submit a completed Biochemical Genetics Patient Information form with the specimen. The requisition is mandatory as the information you provide is required in order to issue an interpretive report.
You must submit a completed Biochemical Genetics Patient Information form with the specimen. The requisition is mandatory as the information you provide is required in order to issue an interpretive report.
Test Location
Mayo Clinical Labs, Minnesota USA
Test Version
19-Jan-2024
Specimen
Specimens
Serum
You must submit a completed Biochemical Genetics Patient Information form with the specimen. The requisition is mandatory as the information you provide is required in order to issue an interpretive report.
You must submit a completed Biochemical Genetics Patient Information form with the specimen. The requisition is mandatory as the information you provide is required in order to issue an interpretive report.
Sample Volume
2 mL
Minimum Volume
0.75 mL
Specimen Comment
Gel-separator tube preferred.
Collection & Handling
Collection Instructions
Avoid hemolysis.
Handling Information
Prepare two 1 mL aliquots in transfer vials. Store and send at controlled ambient temperature. Do not freeze.
Additional Information
Indicate date of birth. Due to limited stability, specimens must be received at ICL Monday – Wednesday within 4 days of collection.If advised, ICL Client Care can monitor specimen receipt to ensure timely processing.
Stability
| Ambient | 7 days |
|---|---|
| Refrigerated | 48 hours |
| Frozen | Unsuitable |
Additional Stability Information
Freezing or prolonged storage at 4°C (>12 hours) causes loss of LD-V.
Rejection Criteria
| Hemolysis | Visible |
|---|
Test Version
19-Jan-2024
Performance / Interpretation
Method
Electrophoresis Densitometry (LDI) & Photometric Rate (LD)
Turnaround Time
7 days
Specimen Retention Time
1 week
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| Lactate Dehydrogenase (LD) | U/L |
|
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| LD Iso - I (Heart) | % |
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| LD Iso - II | % |
|
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| LD Iso - III | % |
|
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| LD Iso - IV | % |
|
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| LD Iso - V (Liver) | % |
|
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Test Location
Mayo Clinical Labs, Minnesota USA
Test Version
19-Jan-2024
Interface / Setup
Test Version
19-Jan-2024