Oxalate




Test Mnemonic

OXLATE

CPT Codes

  • 83945 - QTY (1)

Aliases

  • Oxalic Acid

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mLPlasmaLithium heparin (Green)Place specimen on ice after draw.Frozen, CriticalCRITICAL FROZEN. Patient should avoid ingestion of vitamin C for 24 hours prior to sample collection. Separate plasma from cells ASAP or within 1 hour of collection, transfer to standard aliquot tube, and freeze immediately. Separate specimens must be submitted when multiple tests are ordered.

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mLPlasmaEDTA (Lavender)Place specimen on ice after draw.Frozen, CriticalCRITICAL FROZEN. Patient should avoid ingestion of vitamin C for 24 hours prior to sample collection. Separate plasma from cells ASAP or within 1 hour of collection, transfer to standard aliquot tube, and freeze immediately. Separate specimens must be submitted when multiple tests are ordered.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1.5 mL     

Stability

Environmental Condition Description
FrozenAfter separation from cells: 1 week
RefrigeratedAfter separation from cells: Unacceptable
AmbientAfter separation from cells: Unacceptable

Days Performed

Mon

Turnaround Time

2 - 9 days

Methodology

Name Description
Spectrophotometry (S) 

Reference Range

Oxalate
Sex Age From Age To Type Range Range Unit
       Normal< or = 2.0umol/L

Special Info

CRITICAL FROZEN. Patient Prep: Patient should avoid ingestion of vitamin C for 24 hours prior to sample collection. Separate specimens must be submitted when multiple tests are ordered. Samples that are not plasma will be rejected. Specimens not received frozen are unacceptable. This test is New York DOH approved.

Clinical Info

Used to assess the body pool size of oxalate.