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Test Code LAB10112 Lactate Dehydrogenase (LDH) - CSF

Department

CHEMISTRY

Collection Requirements

DELIVER TO LAB ASAP.

Primary Collection Container

CSF Collection Kit

Transport

CSF ambient

Preferred Transport Temperature

Ambient

Stability

Ambient: 24 hours

Refrigerated: unacceptable

Frozen: unacceptable

Minimum Testing Volume

0.5 mL

Reference Range

No reference ranges have been established.

Methodology

The LDI method uses as a substrate L-lactate buffered at a pH of 9.4. Lactate dehydrogenase oxidizes the substrate in the presence of NAD+ to yield pyruvate and NADH which absorbs light at 340 nm. Lactate dehydrogenase activity is measured as a rate reaction at 340/700 nm, proportional to the amount of lactate dehydrogenase in the sample. Siemens Dimension Vista.

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

83615