Common questions

How long does hair have to be for testing?

How long does hair have to be for testing?

A single hair isn’t going to be enough for a hair drug test, and you can’t use hair collected from a brush or another source – it must be taken directly from the person’s head. For the analysis to effectively determine drug use, a sample of hair needs to be 1.5 inches long, and have the thickness of a pencil.

What will show up in a hair follicle test?

The most common type of hair follicle drug test is the 5-panel drug test. This test works to detect cocaine, opiates, PCP, THC, and amphetamines.

How much hair is required for a hair follicle test?

How much hair is needed for a hair drug test? A hair drug test with initial screen and confirmation requires 100 milligrams of hair (90 to 120 strands).

How short should I cut my hair to pass a drug test?

1.5 inches of hair is needed for the standard 90 day drug test. If head hair it too short, body hair can be used.

What happens if your hair is too short for a hair follicle test?

If head hair it too short, body hair can be used. Although there is no released research or tests, it is suspected that the body hair test can be detected much further back, as far back as a year. The results will not and can not detect the specific day of drug use.

Does dot accept hair follicle test?

Regardless, right now the DOT does not accept the hair follicle drug test as a substitute for the urine drug test. Even if a company requires it, the results an’t be passed along to subsequent or different employers. Similarly, it can’t be added to any national drug testing result clearinghouses.

Does a failed hair test go on your DAC?

This WILL go on a DAC – but may (or may not) be reported to FMCSA (since hair is not an approved test). Either way – a “return to duty” procedure (SAP program, etc.), is likely going to be required, before getting on with another carrier.

How far back does a hair follicle test detect alcohol?

Alcohol EtG Testing – Urine or Hair The presence of EtG in urine is a definitive indicator that alcohol was ingested. With urine EtG alcohol testing there is about an 80 hour lookback period, with hair follicle EtG alcohol testing detection is up to 90 days.

How much hair do you need to get a hairline test?

They should always have enough hair to repeat the test if necessary. If the hair is over 1.5 inches long, then a width of 0.5 inches of hair is required when spread out flat on a ruler. If the hair is shorter than 1.5 inches in length, then more hair is required (1-inch length requires ¾ inch width; 0.5 inch requires 1.5-inch width).

How long does the hair need to be for a drug test?

How long does the hair need to be for a hair follicle drug test? There is only one standard for this test, which is 1.5 inches of hair, cut from the root. The non-root end is discarded. We recommend that you watch the technician perform the test and ask them to cut off and discard the length beyond the first 1.5 inches.

What is the minimum sample size for a hair test?

To properly conduct a hair test, a minimum sample submission size of 0.5 inches is required, up to a maximum of 1.5 inches. It is also important to obtain the hair sample as close to the scalp as possible to provide the most recent results.

How many strands of Hair do I need to complete testing?

If the collected hair is shorter than four inches, but longer than a ½ inch, additional strands of hair (in addition to the first 120 strands), may be required to complete testing. The collector should always note the source of the hair sample on the hair collection envelope.