ORAL FLUID SCREENING AND CONFIRMATION METHODOLOGIES

Oral fluid specimens collected with the RTL-Oral collection device are sent to Redwood Toxicology Laboratory for screening by Enzyme-Linked Immunosorbent Assay (ELISA). Positive screens are confirmed by gas chromatography/mass spectrometry (GC/MS).

	CONFIRMATION CUT-OFF LEVELS BY PROCEDURE
	Drug		ELISA		GC/MS
	Amphetamine		50 ng/mL		15 ng/mL
	Barbiturates		50 ng/mL		20 ng/mL
	Benzodiazepine		20 ng/mL		15 ng/mL
	Cocaine		20 ng/mL		8 ng/mL
	Methamphetamine		50 ng/mL		15 ng/mL
	Opiates (hydrocodone, hydromorphone, oxycodone, 6-monoacetylmorphine)		40 ng/mL		25 ng/mL
	Phencyclidine		10 ng/mL		5 ng/mL
	THC (∆ - 9 THC)		4 ng/mL		1 ng/mL
	Methadone		50 ng/mL		10 ng/mL

	ORAL FLUID DETECTION TIMES
	Drugs of Abuse		Detection Time
	Amphetamine		From minutes up to 48 hours
	Barbiturates		From minutes up to 48 hours
	Benzodiazepines		From minutes up to 48 hours
	Methamphetamine		From minutes up to 48 hours
	Cocaine		From minutes up to 48 hours
	Opiates		From minutes up to 48 hours
	Phencyclidine		From minutes up to 48 hours
	THC (∆ - 9 THC)		From minutes up to 24 hours
	Methadone		From minutes up to 48 hours

RTL also offers on-site test devices. Click here to view the complete line of Reditest^® screening devices.

Drug information data is not definitive and should be used for reference guidelines only.

The Resource Library includes information available in our printed Reference Guide, delivered to all new clients. If you would like to have a copy sent to you, please contact a sales representative at 800-255-2159.