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Lactate Dehydrogenase, LD Isoenzymes

Lactate Dehydrogenase, LD Isoenzymes

Alternate Test Name

Lactate Dehydrogenase Isoenzymes

Epic Mnemonic
Sunquest Mnemonic

LAB97
LDHISO

Category

Sendouts

Methodology

LDI: Electrophoresis Densitometry
LD: Photometric Rate

Test Performance Schedule

LD: Monday – Sunday; continuously
LDI: Tuesday, Thursday, Saturday

Result Availability

1 - 3 days

Specimen Required

Container

Gold top (SST) or Red top (serum) tube

Volume

Pref. Vol.: 2.0 mL serum (2.0 mL divided into 2 tubes each containing 1.0 mL)
Min. Vol.: 1.5 mL serum (1.5 mL divided into 2 tubes each containing 0.75 mL)

Collection Instructions

• Routine venipuncture
• Immediately after collection, gently invert tube 5-10 times
• Clot 30 minutes
• Promptly centrifuge 15 minutes
• Aliquot serum into 2 tubes each containing 1.0 mL
• Store at room temperature

Transportation Instructions

Room Temperature

Stability

After separation from cells:
• Room temperature (preferred): 7 days
• Refrigerated: 48 hours
• Frozen: Unacceptable

Causes for Rejection

• Hemolysis
• Specimen frozen

Remarks

Patient’s age is required

CPT Codes

83615 – LD
83625 – LD Isoenzymes

Effective/Revised

8/29/2019

 

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