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Monitor therapeutic drug level
Serum or plasma
Red-top tube, lavender-top (K2- or K3- EDTA) tube, or green-top (heparin) tube. Do not use a gel-barrier tube. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant.
Transfer separated serum or plasma to a plastic transport tube. Trough concentrations should be monitored. The trough sample is drawn immediately prior to the next dose.
Causes for Rejection
Gel-barrier tube; hemolysis; lipemia; gross bacterial contamination
Peak levels should be ordered using test 070327. Trough levels should be ordered using test 070328. Peak and trough levels may be ordered together as a profile on the same request form using test 717314. Please label tubes appropriately as “peak” and “trough.”
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|070328||Vancomycin Trough, Serum||4092-3||070338||Vancomycin Trough, Serum||ug/mL||4092-3|