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HelpTest 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