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What is the shortest time period that can be accurately evaluated?

April 26, 2017accurately evaluated period shortest time

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What is the shortest time period that can be accurately evaluated?

3 Answers

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In most situations the minimum time period is approximately one month. The test cannot determine drug use for any particular day or week.

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The minimum time period is approximately one month (1/2 inch). Body hair can be used if head hair is too short for a test. If body hair is used the timeframe represented by the test is approximately one year, due to the different growth pattern in hair below the neck.

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• Can body hair be drug tested like hair from the head? • How much hair is needed? • How do drugs get into hair? • What is the difference in Hair Drug Testing compared to urinalysis? • Can hair be affected by cross-reacting substances such as over-the-counter medications? • How effective is hair follicle testing in detecting drug usage? • Does treatment of the hair affect test results? • What is external contamination? • How fast does head hair grow? • Can tests be run on people with little or no hair? • Can hair collected from a hairbrush be used? • What are the different domains in a hair fibre? How they can affect hair drug testing? • How soon after use can a drug be detected in hair? • Does external exposure to certain drugs like marijuana or crack smoke affect the Hair Test results? • Does hair color affect results? • How a hair follicular Drug test is peformed in Laboratory? • What are the different means by which people try to cheat Hair Drug Tests? • What if some detoxifies the