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Test Code 191 Digoxin, Unbound, Serum or Plasma (191)

Important Note

Test should be ordered as "MISC"

Additional Codes

MedTox Test Code: 191

Useful For

Therapeutic Drug Management

Synonyms/Keywords

Digibind; Lanoxicaps; Lanoxin, Digoxin, Free, Free Digoxin

Specimen Requirements

Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
Serum Red Top Tube (RTT)   3 mL 1 mL  
Plasma Lithium-heparin Green Top Tube of Sodium-heparin Green Top Tube (GTT)   3 mL 1 mL  

Collection/Processing Instructions

Trough levels are most reproducible.

Transfer separated serum or plasma to a plastic transport tube. 

Specimen Stability Information

Specimen Type Temperature Time
Serum or Plasma Ambient temperature is acceptable for shipping and/or short-term storage 3 days
Specimen may also be refrigerated or frozen for longer storage.

Rejection Criteria

Serum Separator Tubes (SST) and Plasma Separator Tubes (PST) are not acceptable.

Reference Range Information

Reference Interval
0.3-1.5 ng/mL

Performing Laboratory Name

Medtox Laboratories

Referral Laboratory Information

Address Telephone Website Link Marshfield Lab Account #

402 West County Road D

St. Paul, MN 55112

800-832-3244 (Main)

888-310-2264 (Team Emerald)

www.medtox.com 1080

Performing Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Medtox Laboratories Performed daily 1 day Ultrafiltration; Immunoassay (IA)

CPT Codes

CPT Modifier
(if needed)
Quantity Description Comments
80163        

Outreach CPT Codes

CPT Modifier
(if needed)
Quantity Description Comments
80163