Lactate Dehydrogenase (LDH)-Other

Label Mnemonic:	LDO
Epic code:	LAB638
Order form:	Laboratory Requisition
Supply order:	Supply Order Form
Billing:	Billing Policies
CPT code:	83615

Specimen(s):

Body Fluid
(e.g., surgical drain, pericardial, peritoneal, peritoneal dialysis, pleural, cerebrospinal fluid or synovial)

Collection Medium:

Red top tube 5 mL (Clot Activator)

Minimum:

1 mL fluid in red top tube

Rejection Criteria:

Plasma, serum, or urine.

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, pericardial fluid, peritoneal/ascites fluid, pleural fluid, and synovial 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.
Separate plasma or serum into labeled container and cap.
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.

CPT Code:

83615

See also:
Lactate Dehydrogenase (LDH), Plasma