Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  


Geisinger Epic Procedure Code: LAB3234         Geisinger Epic ID: 29556

Specimen type:
Serum or plasma.
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
Specimen required:
2 mL aliquot serum or plasma ; minimum 0.2 mL.
Special notes:
The date and time of the last drug dose should be written on request at the time of order. Typically peak level specimens are collected shortly after the dose is given and trough level specimens are collected shortly before the dose is given. Refer to your prescribing pharmacy for specific information on how drug doses are to be administered along with timing of specimen collection.

Specimen processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. 
Transport temperature:
Refrigerated (preferred) or frozen.
Specimen stability:
Room temperature: 48 hours. Refrigerated: 14 days. Frozen: 1 year.
Rejection criteria:
Stability limits exceeded

Reference interval:
10-20 ug/mL
Critical values/courtesy alerts:
> 40 mcg/mL.
CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Trough vancomycin, vancomycin last dose time, vancomycin last dose date.
Clinical significance:
Vancomycin is an antibiotic used in the treatment of serious bacterial infections, especially methicillin-resistant staphylococci. Vancomycin is also used in treatment for penicillin-allergic patients who cannot receive or have failed to respond to other drugs, including the penicillins and/or cephalosporins and for other infections caused by vancomycin-susceptible organisms.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 12/14/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Megan Woodruff / Jared Shepherd
Frequency: Daily, Monday - Sunday
Performed STAT? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Danielle Mostowski    
Frequency: Daily, all shifts    
Performed STAT? No

Geisinger Community Medical Center

Performing laboratory: Chemistry
Technical Lead: Ann Mack, Deborah Dempsey  
Frequency: Daily, all shifts    
Performed STAT? Yes

Geisinger Lewistown Hospital

Performing laboratory: Chemistry
Technical Lead: Jane Kifer  
Frequency: All shifts    
Performed STAT? Yes

Geisinger Jersey Shore Hospital

Performing laboratory: Chemistry
Technical lead: Emily Haines    
Frequency: Daily, all shifts    
Performed STAT? Yes
Locations  |    Search  |    Site Map |   Contact Us
©2000-2023 Geisinger Health System.   All rights reserved.