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Post-mortem hair sample analysis can also be performed, to allow for determination of long-term drug use or poisoning. [5] It is also used by employers, who test their employees. [6] Hair analysis has the virtue of showing a 'history' of drug use due to hair's slow growth.
Cannabis use is detectable with hair tests and is generally included in the standard hair test. Hair tests generally take the most recent 1.5 inches of growth and use those for testing. That provides a detection period of approximately 90 days. [5] If an individual's hair is shorter than 1.5 inches, this detection period will be shorter.
Thus, the most common hair sample length of 1.5" from the scalp would detect drug use within the last 90-100 days. 80-120 strands of hair are sufficient for the test. [68] In the absence of hair on the head, body hair can be used as an acceptable substitute. This includes facial hair, the underarms, arms, and legs or even pubic hair.
Types of Hair Transplant Procedures. There are two generally accepted approaches to hair transplants: Follicular unit extraction (FUE) Follicular unit transplantation (FUT)
Whereas if you wait too long in between shampoos, "you could end up with a scalp that is very clogged, meaning hair won't be able to grow out of the follicle the way and at the rate that it's ...
In mainstream scientific usage, hair analysis is the chemical analysis of a hair sample. The use of hair analysis in alternative medicine as a method of investigation to assist alternative diagnosis is controversial [1] [2] and its use in this manner has been opposed repeatedly by the AMA because of its unproven status and its potential for healthcare fraud.
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