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Test Code CSFLDH CSF LDH

Specimen and Container/Tube

Specimen Type: Cerebrospinal fluid

Preferred Specimen:CSF tube 

Other Acceptable specimens: Sterile Plastic Container, Sterile Clean Glass Container

Specimen Stability

Storage Temperature

Stability

Room temperature

6 hours

Refrigerated

 6 hours

Frozen

 not preferred

Collection Instructions

  • Collect specimen per standard laboratory collection procedures. 
  • No preservatives or additives.

 

Specimen Handling and Transport Instructions

UCMC Onsite Instructions: 

  • Cerebrospinal fluid specimen obtained by clinical procedures.
  • Cerebrospinal fluid must be sent to Laboratory Service Center immediately for analysis
  • Transport refrigerated (2 - 8ºC).

UCMC Offsite and UC MedLab Outreach Instructions: 

  • Cerebrospinal fluid specimen obtained by clinical procedures.
  • Aliquot specimen into transport tube and freeze.
  • Transport frozen on ice to laboratory

Rejection Criteria

  • Common specimen rejected situations include: incorrect specimen type, insufficient volume, missing or incomplete specimen identifiers, incorrect specimen transport, or specimens outside stability limits.
  • Specimens that are collected with preservatives or additives.

Reference Values

Test

Age

Sex

Reference Range

CSF LDH

All

All

Not applicable 

Critical Values

Not applicable 

Turnaround Time

Turnaround times are relative to the time the specimen is received in the test laboratory. 

STAT Turnaround Time: 1 hour 

Routine Turnaround Time: 4 hours

Testing Schedule:  24/7

Clinical Indications

LDH levels in CSF may be associated with traume, infection, neoplastic disorders, or auto-immunity. 

Test Components

CSF LDH

CPT Codes

83615

LOINC Codes

TBD

Methodology

UV Assay Spectrophotometric Method (Roche Diagnostics)

Synonyms/Keyword Search

N/A

Additional Information

No reference range available. The test result must be interpreted in conjunction with the clinical context of the patient.

Last Review Date

4/10/2025

Volume

Preferred Volume: 0.5 mL

Minimum Volume: 0.2 mL