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HelpTest ID FKMS Ketamine and Metabolite Screen, Serum/Plasma
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| FKMSC | Ketamine and Metabolite Confirm | No | No |
Testing Algorithm
If Ketamine and Metabolite Screen is positive, then Ketamine and Metabolite Confirm (FKMSC) will be performed at an additional charge.
Method Name
Gas Chromatography/Mass Spectrometry (GC/MS)
Reporting Name
Ketamine and Metabolite ScreenSpecimen Type
VariesSubmit only 1 of the following specimens:
Serum
Draw blood in a plain red-top tube(s), (Serum gel tube is not acceptable.) Spin down and send 5 mL serum refrigerated in a plastic preservative-free vial.
Plasma
Draw blood in a lavender-top (EDTA) tube(s) or green-top (heparin) tube(s), (Plasma gel tube is not acceptable.) Spin down and send 5 mL EDTA or heparinized plasma refrigerated in a plastic preservative-free vial.
Specimen Minimum Volume
2.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Varies | Refrigerated (preferred) | 30 days |
| Frozen | 210 days | |
| Ambient | 30 days |
Reference Values
Reporting limit determined each analysis
Units: ng/mL
Ketamine:
Synonyms: Ketalar
Reported levels during anesthesia: 500 – 6500 ng/mL
Norketamine:
Synonyms: Ketamine Metabolite
The intravenous administration of 2 mg/kg of Ketamine followed by continuous infusion of 41 mcg/kg/minute produced an average steady-state plasma concentration of 2200 ng Ketamine/mL and an average peak Norketamine level of 1050 ng/mL which occurred near the end of the 3 hour infusion.
Day(s) Performed
Tuesday, Thursday
Report Available
7 daysPerforming Laboratory
NMS LabsCPT Code Information
80304 – Screen
80357 – Confirmation, if appropriate