Oxalate, Plasma
Order Code: SO
Fee Code: 40393 (CPT 83945)
LOINC: 15085-4
Reference Laboratory: ARUP 2011697
Due to Oxalate, Plasma assays being down at Mayo Clinic Laboratories and NMS Labs (see MLabs Test Updates 902 and 906), this test will be sent to ARUP Laboratories effective May 6, 2025, until further notice.
Collection Instructions: Patient should avoid ingestion of vitamin C for 24 hours prior to sample collection. Collect specimen in a green top (sodium or lithium heparin), lavender top (EDTA) or pink top (K2EDTA) tube. Place on wet ice immediately following collection. Centrifuge, aliquot 2 mL (minimum 1.5 mL) of plasma into a plastic vial, and freeze within 1 hour of specimen collection.
Reference Range: <=2 mcmol/L