I am certain that Draeger's Drug Test 5000 is only qualitative.
Directly from the Draeger web site - Owner's Manual:
3.3 Confirmation of results
The Dräger DrugTest 5000 test system is a qualitative measurement procedure. For a confirmed result, a second sample must be taken and analyzed
by an accredited laboratory.
Take the second sample with a collection system suitable for saliva samples.
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It basically will tell you +/- for a specific drug. The tester has to take a second saliva sample, and ship it to a lab for further testing if +, to determine the numeric, or quantitative level. Lifeloc's device will give you a numeric reading for THC in ng/ml on site, within minutes. That reading will distinguish immediately if the subject is above, or below the legal cut-off limit for the state, country, or municipality - just like an alcohol breathalyzer would give a value, such as 0.10%.
The US Department of Transportation has established a limit of 4 ng/ml for THC. Other countries are now establishing similar cut-off limits for THC as well.
The DDT5000 is designed to be used at the roadside or after arrest, much akin to the portable breath test (PBT) devices used for alcohol testing. Unlike the PBT, the DDT5000 does not provide any numerical reading, limiting the utility of the devices to a roadside "screening" as opposed to a quantitative device. Even a positive result still requires confirmatory testing1. The DDT5000 only provides a qualitative result of a positive or negative sample, and Draeger, Inc. states in its manual that in order to obtain a confirmed analytical result, a more specific alternate chemical method is needed, such as Gas Chromatography/Mass Spectrometry. Thus, Draeger suggests that a second saliva sample be obtained and analyzed by an accredited laboratory.
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