Codeine

Test ID: 

703632

CPT code:

80361

Synonyms:

Codeine and Metabolite

Clinical Use:

Half-life of elimination: approximately three hours. Time to peak, serum: one hour.

Specimen Type:

Serum, plasma, or whole blood

Requested Volume: 

0.1 mL

Minimum Volume: 

0.3 mL

Container Type: 

Red-top tube, lavender-top (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.

Collection:

Separate serum or plasma within one hour of collection and transfer to a plastic transport tube.

Storage Instructions:

Room temperature

Stability Requirements:

Rejection Criteria

Gel-barrier tube