Lactate Dehydrogenase (LDH)

Label Mnemonic:	CFLD
Epic code:	LAB637
Order form:	Laboratory Requisition
Supply order:	Supply Order Form
Billing:	Billing Policies
CPT code:	83615

Specimen(s):

CSF

Collection Medium:

CSF collection kit

Minimum:

0.5 mL

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Turn Around Time:

1 hour (upon receipt in laboratory)

Reference Range:

No established reference range (see Test Limitations)

Test Limitations:

This test is not approved by the FDA for this sample type. Performance characteristics and reference range have not been verified. A published study using Roche Diagnostics cobas 8000 analyzers has demonstrated that analysis of LDH in cerebrospinal fluid shows no evidence of systematic matrix interference. Results should be interpreted in conjunction with clinical findings.

Reference: Owen WE et al. Body fluid matrix evaluation on a Roche cobas 8000 system. Clinical Biochemistry 2015; 48(13-14):911-914.

Methodology:

UV assay

Sample Processing:

Centrifuge within one hour of draw time.
Centrifuge at a speed and time necessary to get barrier separation of plasma/serum and cells.
Label transport tube with two patient identifiers, date and time of collection.
Indicate specimen/fluid type on requisition.

Sample Storage:

Refrigerate.

Transport Instructions:

Place labeled specimen into zip-lock type biohazard bag; seal bag.
Place completed requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.

See also:
Lactate Dehydrogenase (LDH), Plasma