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Epic Test Code LAB39 Vancomycin, Trough

Performing Location(s)

BMC,FOX,LFH,OCH

Specimen Type

Serum

Preferred Container

Gold or Red top tube

Blood Tube Draw Volume

Min 50% draw volume  

Minimum Volume to Submit for Testing

2 mL Serum

  • Multiple test can be performed from this volume. For question please contact the lab at 547-3975.  

Transportation Needs

Deliver specimen to laboratory within 1 hour of collection if unspun. If not possible see "storage Requirements". 

Storage Requirements

Sample tubes should be centrifuged within 2 hour of collection followed by transfer of the serum (red or gold top)  to a labeled plastic, aliquot tube.
See Causes of Rejection for temperature requirements.

Causes for Rejection

Mislabeled or unlabeled specimen
Less than 50% draw for Vacutainer tubes
> 6 weeks Refrigerated (Serum tubes are routinely stored at the lab for only 7 days therefore, an add-on may not be possible after 7 days.)
> 24 hours Room Temp
>6 months Frozen
Hemolysis > 400 mg/dL HgB
Lipemia > 750 mg/dL Trig
Bilirubin > 30 mg/dL Bili

Limitations

Icteric specimens may cause falsely elevated levels

Reference Values

Population Units Therapeutic Range High Critical Value
Random ug/mL 10 - 30 > 30
Peak ug/mL 20 - 50  > 70
Trough ug/mL 10 - 20  > 20

 

Days of Analysis

All

Available STAT

Yes

Includes

Quantitative analysis for Vancomycin

Additional Information

Collection Guideline:

Obtain a baseline creatinine and repeat at 1-3 day intervals.
Begin monitoring after steady state is achieved (usually 3-4 doses).

Monitor at least one peak (60-90 min after IM or 30-60 min IV) and one trough (within 30 min of next dose).
Repeat trough measurements at 3-4 day intervals or sooner if warranted by clinical status
Base frequency of monitoring on changes in dose and patient symptoms
Perform urinalysis by day 3 and repeat as necessary to assess early proximal tubular dysfunction

Methodology

Beckman AU/Dx Series

 

CPT Code

80202

Last Updated

18-Mar-22 BHD