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Lactate Dehydrogenase Isoenzymes
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
LDHISO
CPT Codes
83625
Includes
LD1, LD2, LD3, LD4, LD5
Preferred Specimen
2 mL serum
Minimum Volume
1 mL
Instructions
Total Lactate Dehydrogenase results should be supplied by Client.
Centrifuge serum specimens within 1 hour of collection, transfer serum to a clean, plastic, screw-capped vial(s), and send at room temperature to the laboratory. Do not refrigerate or freeze specimens. Specimens cannot be shared, and no other tests should be ordered with Lactate Dehydrogenase Isoenzymes.
Centrifuge serum specimens within 1 hour of collection, transfer serum to a clean, plastic, screw-capped vial(s), and send at room temperature to the laboratory. Do not refrigerate or freeze specimens. Specimens cannot be shared, and no other tests should be ordered with Lactate Dehydrogenase Isoenzymes.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: Unacceptable
Frozen: Unacceptable
Refrigerated: Unacceptable
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Received refrigerated • Received frozen
Methodology
Electrophoresis
Setup Schedule
Monday, Wednesday, Friday Morning Report available: Next Day
Reference Range
LD 1 | 19-38 % | |||||||
LD 2 | 30-43 % | |||||||
LD 3 | 16-26 % | |||||||
LD 4 | 3-12 % | |||||||
LD 5 | 3-14 % |
Clinical Significance
Diagnostic aid for myocardial infarction. Also for malignancies, anemias, and acute liver and muscle injury.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Dr
Chantilly, VA 20153
Last Updated: November 24, 2021