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What time period does a standard test cover?

April 26, 2017cover period standard Test time

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What time period does a standard test cover?

4 Answers

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A standard test of one-and-one-half inches of head hair cut close to the scalp can provide a several month window to detect drug ingestion.

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A standard screen covers a period of approximately 90 days. The hair sample is cut as close to the scalp as possible and the most recent 1.5 inches are tested.

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

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A standard test covers a period of approximately 90 days. The hair sample is cut as close to the scalp as possible and the most recent 1.5 inches are tested.