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Lactate Dehydrogenase
MessageChemistry
Test Code
LAB96
Alias/See Also
LDH, Lactate Dehydrogenase
CPT Codes
83615
Preferred Specimen
Light green top tube (lithium heparin plasma)
Minimum Volume
600 uL whole blood (one full light-green-top microtainer or two full red-top microtainers).
300 uL plasma.
300 uL plasma.
Other Acceptable Specimens
Gold top (serum separator tube) or Red Top
Instructions
LAB: Serum acceptable. No hemolysis. Keep specimen at Ambient Temperature.
Dilute grossly lipemic specimens.
Dilute grossly lipemic specimens.
Transport Temperature
Room Temp
Specimen Stability
Room temperature 18–28 °C (64–82 °F) ≤ 2 days
Refrigerated 2–8 °C (36–46 °F) Not recommended*
Frozen ≤-18 °C (≤0 °F) Not recommended* *LD4 and LD5 isoenzymes are labile at refrigerator and freezer temperatures
Refrigerated 2–8 °C (36–46 °F) Not recommended*
Frozen ≤-18 °C (≤0 °F) Not recommended* *LD4 and LD5 isoenzymes are labile at refrigerator and freezer temperatures
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolyzed. Refrigerated sample not recommended.
Methodology
Multiple-point rate
FDA Status
approved
Setup Schedule
Everyday
Report Available
Same day
Limitations
Certain drugs and clinical conditions are known to alter lactate dehydrogenase activity in vivo.
Reference Range
Serum: 120 - 246 U/L
Performing Laboratory
Hoag Newport/ Hoag Irvine
