3 - 7 days
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Ion Chromatography (IC)
Assessing the body pool size of oxalate.
<1.6 mcmol/L. Reference values have not been established for patients under 21 and greater than 81 years of age.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Patient should avoid taking vitamin C supplements for 24 hours prior to specimen collection. Collect specimen in sufficient green top tubes from a fasting patient. Place on wet ice immediately following collection. Centrifuge for 10 minutes at 2,000 rpm at 4 degrees C within 1 hour of collection and aliquot plasma into a plastic vial. Adjust the pH of the plasma specimen to a pH of 1 to 3.5 (ideal range is 2.3-2.7) with approximately 10 mcL concentrated (12N) HCl per 1 mL plasma or deliver to MLabs within 1 hour of collection. Freeze.