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Can a hair follicle test determine exactly how often a drug was used and exactly what the drug was ie codeine not morphine.
Or does it just come back that an opiate was used in the last 3 months?
Does the follicle test state how much of a substance was used,leading perhaps to further investigation??
yes please,I will rate you when I get a response.
It seems that once I rate someone I can't ask them more questions....
This is the reply I got back from a hair testing lab to which I posed the same questions:
We can estimate when, by making the assumptions for head hair samples:
1. Hair grows at 1cm/month
2. It take 2weeks for the hair to become available for sampling.
3. Only 10-15% of the hair is not growing
Can you determine how many times a drug was used and what that exact drug was.ie: codeine as opposed to morphine?
We can determine which drug is used as the parent drug and metabolites are ‘locked’ in the hair as the hair grows. The drugs and metabolites are released in the extraction process and measured by LC-MS/MS and GC-MS/MS both highly sensitive and selective techniques, which allow us to determine and quantify which opiate i.e. codeine or morphine.