Quick Answer: What Does It Mean When A Drug Test Comes Back Diluted?

How do you fight a false positive drug test?

The best way to contest false-positive results is to reach out to your pharmacist and ask if prescription drugs and OTC medications you take on a regular basis can cause a positive drug test result.

Ask if the pharmacist can provide written documentation to this effect and bring a copy to the test site..

What causes dilute urine?

ADH normally causes the kidneys to make the urine more concentrated. As a result of not responding to the ADH signal, the kidneys release too much water into the urine. This causes the body to produce a large quantity of very dilute urine. NDI is very rare.

Can a drug test come back inconclusive?

An inconclusive or invalid result means that the test wasn’t successful in checking for the presence of the panel drugs.

What is a false negative on a drug test?

False-negatives can occur when the urine drug concentration is below the threshold level set by the laboratory performing the test. Dilute urine, the duration of time between ingestion of the drug and time of testing, and the quantity of the drug ingested may affect the occurrence of false-negatives.

How long does it take for an eScreen drug test to come back?

Workwell services available through eScreen include: Non-DOT Drug Screen eScreen 5 Panel (negative results via website 15 minutes after collection) Non-DOT Drug Screen eScreen 7/9/10 Panel (results in 48-72 hours)

Does labcorp test for dilution?

Specimen validity testing (SVT) is performed on a urine drug screen specimen to detect substitution, adulteration, or dilution.

Can you ask for a retest for drug test?

If you believe a positive result is wrong, you can ask to be retested. Drug tests are not 100% accurate and you have the right to challenge a decision you feel is wrong. If you are a union member, your union may be able to help. You can also speak to a lawyer.

What happens if drug test comes back positive?

If the test results in a positive reading, meaning there is drug residue in the body, the results are forwarded to a medical review officer, who reviews the results and looks for any possible valid medical explanation for the results.

What does it mean when a drug test comes back negative dilute?

What a Negative Dilute Drug Test Result Means? A dilute specimen is a urine sample that has higher water content than the average specimen, which minimizes the drug levels visible in the urine. Sometimes dilution is intentional, but it can happen accidentally as well.

Can pregnancy cause a diluted drug test?

However there are times when the body is producing “too much water” and the body is trying to balance itself and the urine sample is dilute for a “physiological reason. This could be because of being Diabetic, sometimes during pregnancies, or via kidney problems.

Why did my drug test come back negative?

Immunoassays are based on the binding of an antibody and antigen. When a drug is present in such high concentrations that there are no more binding sites left on the antibody, the sample may present with falsely low values. If the low value is below the test cutoff, the result will be negative.

Is a diluted urine sample a fail?

Diluted urine can make it difficult to get accurate results from a urine drug test. However, it doesn’t necessarily mean that someone is trying to “cheat” the test. Some people might drink lots of water to stay healthy or ensure they can give enough urine.

How long does a drug screen take?

Fast, reliable results Negative results are often released within 24 hours. Non-negative screens undergo confirmatory testing and are typically released within an additional 24 to 72 hours. Find the nearest drug testing collection site.

What happens if your drug test comes back diluted twice?

In the cases where a 2nd test is offered, if the 2nd test comes back negative-dilute, some companies choose to accept the negative-dilute as a negative result. While others have a policy that a 2nd negative-dilute sample, or otherwise invalid specimen (e.g. out of temperature range), will result in a refusal to hire.

Can an EtG test be diluted?

Studies show that the intake of water prior to urine sampling results in a dramatic reduction in the EtG concentration, while expressing EtG as a ratio to creatinine is not affected by dilution.

What makes a urine test invalid?

Invalid result: Refers to the result reported by a laboratory for a urine specimen that contains an unidentified adulterant, contains an unidentified interfering substance, has an abnormal physical characteristic, or has an endogenous substance at an abnormal concentration that prevents the laboratory from completing …

Can urine drug test wrong?

False-Positive Results. In some cases, a drug test may report the presence of illicit drugs, although none were taken. While this is not common, no test is 100% accurate. Lab errors account for some of the mistakes, but most false-positives may be attributed to over-the-counter drugs and foods that can affect the test.