However, If Drugs Were Used For The First Time Within Seven.
1.5 inches of hair is needed for the standard 90 day drug test. With the rate that hair grows, ten inches could provide over eighteen months of data. How long can drugs be detected in a hair follicle test?
This Type Of Test Can Reveal The Presence Of Drug Use For As Long As 90 Days.
How long does it take to get a drug test back? These tests can detect drug use up to three months prior to. However, these tests cannot pinpoint the exact date of.
If Head Hair It Too Short, Body Hair Can Be Used.
Depending on the length of the hair collected, it can even. While urine drug testing can typically look back a week, hair follicle drug tests have a detection window of 90 days. This drug test is also difficult to cheat, adulterate or substitute.
The Hair Drug Test Can Detect Drugs Going Back Approximately 7 To 90 Days;
Hair taken from your head will hold evidence of drug use for up to 90 days while hair taken from other parts of your body could hold evidence for up to a year. It depends on the type of test and workplace. A hair follicle drug test is the only drug test that can detect repeated drug use up to 90 days prior to the test.
This Is Possible Because Drugs Present In The Bloodstream Actually.
Many employers use the hair follicle drug test for prospective employees or randomly for existing employees. In theory, if your hair was 18 inches long, and you tested the far ends of the hair strands, then you could find drugs consumed more than three years ago. Drugs can be detected in a hair follicle test for about 90 days.
