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Oxalic acid, plasma
|Patient Preparation||Patient should be fasting (12 hours) and should avoid taking vitamin C supplements for 24 hours prior to draw.|
|Collection Instructions||Place green top tube on wet ice immediately, transport blood tube on ice to the specimen processing section of Clinical Laboratories asap.|
|Container type||Dark Green top (on ice)|
|Amount to Collect||10 mL blood|
|Sample type||Heparinized plasma|
|Preferred volume||5 mL plasma|
|Min. Volume||2 mL plasma|
|UCSF Rejection Criteria||Sample not received on ice or delivered > 30 min after collection.|
|Processing notes||Centrifuge sample at 4C in a refrigerated centrifuge for 10 minutes at 2000 rpm within 1 hour of draw.
IMPORTANT: After centrifugation, bring the plasma specimen to Chemistry so the pH can be adjusted to a pH of 1.0 to 3.5 (ideal range is 2.3 to 2.7).
Freeze sample at -20C and send frozen in a plastic vial on dry ice to China Basin sendouts. Do not allow to thaw.
Order Mayo test # 81408.
|Ref Lab Rejection Criteria||Thawed, non-acidified or non-heparinized samples.|
|Normal range||< 1.8 µmol/L|
|Last Updated||5/30/2013 9:58:30 AM|