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Test ID FHMTB Hydrocodone and metabolites

Method Name

Gas chromatography with Mass Spectrometry (GC/MS)

Reporting Name

Hydrocodone and MTB, Free

Specimen Type


Specimen Required

Submit only 1 of the following specimens:




Draw blood in a green-top (sodium heparin) tube(s), plasma gel tube is not acceptable. Spin down and send 5 mL sodium heparin plasma refrigerated in a plastic vial.




Draw blood in a plain red-top tube(s), serum gel tube is not acceptable. Spin down and send 5 mL of serum refrigerated in a plastic vial.

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated (preferred) 14 days
  Frozen  180 days
  Ambient  72 hours

Reference Values

Reference Range:


Hydrocodone, unconjugated: 10-100 ng/mL


Hydromorphone, unconjugated: 1-30 ng/mL


Dihydrocodeine, unconjugated: Not established ng/mL

Day(s) Performed

Tuesday through Saturday

Performing Laboratory

Medtox Laboratories, Inc.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FHMTB Hydrocodone and MTB, Free Not Provided


Result ID Test Result Name Result LOINC Value
Z4300 Hydrocodone, unconjugated 12786-0
Z4301 Hydromorphone, unconjugated 12787-8
Z4302 Dihydrocodeine, unconjugated 12785-2

Report Available

5 to 9 days

NY State Approved