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Oxalate, Serum/Plasma-994

Test info

Test name:

Oxalate, Serum/Plasma

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Oxalic Acid

Useful for:

Assess the body pool size of oxalate

Limitations:

Known Interference(s): Oxalate [EZA]: ascorbic acid

Specimen

Specimen type:

Serum

Collection container:

Red serum vial/tube - 5 mL

Volume:

2.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediatley following collection, mix sample by inverting 8 - 10 times to prevent clotting.
Place tube on wet ice immediately after collection.

Processing instructions:

Spin within 1 hour of collection
Transfer serum to a chilled Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp) labelled as serum
Freeze immediately

Transport container:

Chilled Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Alternate specimen type:

Heparin plasma

Alternate collection container:

Dk green Sodium heparin (Na hep), no gel, 4mL

Alternate collection instructions:

Immediately following collection, mix sample by inverting 8 - 10 times to prevent clotting.
Place tube on wet ice immediately after collection.

Alternate processing instructions:

Spin within 1 hour of collection
Transfer plasma to a chilled Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp) labelled as Na plasma
Freeze immediately

Transport and stability:

Frozen (preferred) - 30 days

Refrigerated - NO

Ambient - NO

Reason for rejection:

Samples received at room temp
Gel separation tubes (SST or PST)

Performance

Performing lab:

NMS (3275SP) via LabCorp (834277): R-NX

TAT:

3 - 7 days

Method:

High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS)

Clinical and Interpretive info

Reference ranges:

See report

Billing

CPT codes:

83945

LOINC code:

Result 15085-4

Tracking

Date created:

05/24/2019

Revised date:

08/18/2026

Review date:

08/18/2026