What is a split specimen urine sample?

What is a split specimen urine sample?

A split specimen test proceeds much the same as any other urine test. However, the driver’s collected urine is divided into two samples. If the first tested sample reveals a positive result, the second sample can be tested to either confirm or reject the findings of the first test. Background of Split Specimen Tests.

What is a split sample?

A single grab sample that is separated into at least two parts such that each part is representative of the original sample. Often used to compare test results between field kits and laboratories or between two laboratories.

What do you mean by split sample test?

A split specimen test is when the employee’s urine sample is split between two specimen cups in order to have a second sample tested if the employee wants this done. Most companies automatically do this, as it’s generally a DOT requirement.

What makes a urine sample invalid?

Invalid Sample “The result of a drug test for a urine specimen that contains an unidentified adulterant or an interfering substance, has abnormal physical characteristics, or has an endogenous substance at an abnormal concentration that prevents the laboratory from completing or obtaining a valid drug test result.”

Why do they do a split drug test?

The main purpose of the split specimen urine test is to protect the donor against possible mix-up in the lab, or in case of a faulty equipment. The Medical Review Officer can ask the donor for any prescription they are taking prior to taking urine samples.

Why do they split urine test?

Can UTI tests be wrong?

Although we know standard UTI testing is inaccurate, some individuals do find an answer. You may be able to request changes to the standard urine culture to increase its accuracy.

How long does urine sample last?

If you can’t hand your urine sample in within 1 hour, you should put the container in a sealed plastic bag then store it in the fridge at around 4C. Do not keep it for longer than 24 hours. The bacteria in the urine sample can multiply if it is not kept in a fridge. If this happens, it could affect the test results.

Why do they take two urine samples?

What are the cutoff levels for a non DOT drug test?

Subpart F – Drug Testing Laboratories

Initial test analyte	Initial test cutoff1	Confirmatory test cutoff concentration
Oxycodone/ Oxymorphone	100 ng/mL	100 ng/mL. 100 ng/mL.
6-Acetylmorphine	10 ng/mL	10 ng/mL.
Phencyclidine	25 ng/mL	25 ng/mL.
Amphetamine/ Methamphetamine	500 ng/mL	250 ng/mL. 250 ng/mL.

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