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Test ID FFLRO Flunitrazepam Confirmation, Serum

Method Name

Gas Chromatography-Mass Spectrometry (GC/MS)

Reporting Name

Flunitrazepam (Rohypnol)

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

2 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated (preferred) 14 days
  Frozen  365 days
  Ambient  48 hours

Reference Values

Units:    Flunitrazepam                ng/mL

            7-Aminoflunitrazepam    ng/mL


Peak plasma Flunitrazepam concentrations in patients receiving chronic, recommended dosages: 10 – 20 ng/mL.


Note: Flunitrazepam is not legally marketed in the United States.

Day(s) Performed

Monday through Sunday

Performing Laboratory

Medtox Laboratories, Inc.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FFLRO Flunitrazepam (Rohypnol) Not Provided


Result ID Test Result Name Result LOINC Value
Z1075 Flunitrazepam 73828-6
Z1074 7-Aminoflunitrazepam 73829-4

Report Available

5 to 9 days

NY State Approved