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Specimen Collection Manual and Test Catalog

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DOXEPIN

Geisinger Epic Procedure Code:  LAB2196    Geisinger Epic ID:  21987

SPECIMEN COLLECTION
Specimen type: 

Serum (preferred) or plasma.


Preferred collection container: 
Alternate collection container: 
3 mL green/black top lithium heparin tube
6 mL pink-top K2 EDTA tube
4 mL green/green-top (sodium heparin) tube
Specimen required: 

3 mL aliquot of serum (preferred) or plasma; minimum 1.5 mL.


Special notes: 

Do not use serum separator (gel barrier) tubes.


Patient preparation: 

Collect as a trough just prior to next dose or at least 12 hours after last dose.



SPECIMEN PROCESSING
Processing instructions: 

Centrifuge and immediately separate serum or plasma specimens from the cells into clean, plastic, screw-capped vial(s).


Transport temperature: 

Room temperature (preferred). Refrigerated or frozen specimen also acceptable.


Specimen stability: 

Room Temperature: 5 days. Refrigerated: 7 days. Frozen: 1 month.


Rejection criteria: 

Specimens collected in serum-separator tubes. Gross hemolysis.



TEST DETAILS
CPT code(s):  80299 (Unspecified quantitative therapeutic drug) or 80335 (Definitive drug)
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: 

Doxepin, Nordoxepin and Total


Methodology: 
Chromatography/Mass Spectrometry
Synonyms: 

Zonalon, desmethyldesipramine, Sinequan®,Adapin®,Nordoxepin, Desmethydoxepin, DOXEP, Quest test code 826


Review Date:  11/12/2024

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