Ordering Recommendation

Assess the body pool size of oxalate.

Mnemonic
POXAL
Methodology

Quantitative Spectrophotometry

Performed

Monday and Friday

Reported

1-5 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Patient should avoid ingestion of vitamin C for 24 hours prior to sample collection.

Collect

Green (lithium or sodium heparin) or Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation

Place tube on wet ice immediately after collection.  Separate plasma from cells ASAP or within 1 hour of collection. Transfer 2 mL plasma to an ARUP Standard Transport Tube and freeze immediately. (Min: 1.5 mL)

Storage/Transport Temperature

CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Samples that are not plasma.  Samples not received frozen.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 week

Reference Interval

Less than or equal to 1.9 µmol/L

Interpretive Data



Compliance Category

Modified FDA

Note
Hotline History
N/A
CPT Codes

83945

Components
Component Test Code* Component Chart Name LOINC
2011698 Oxalate, Plasma 15085-4
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
Oxalate, Plasma