What does inconclusive mean on a drug test? (2024)

What does inconclusive mean on a drug test?

INCONCLUSIVE. An inconclusive result is neither positive nor negative. This result can occur from inadequate sample collection, very early-stage infection, or for patients close to recovery. With an inconclusive result, collecting and testing another sample is recommended.

What does an inconclusive urine sample mean?

Inconclusive or uncertain.

This means "not sure." Your test wasn't clearly positive or negative. There are many reasons why this may happen. If you get an uncertain result, you will probably be tested again.

Does inconclusive drug test mean positive?

A negative test result shows that no drug residues were found in your sample. An inconclusive result indicates that the testing was not able to confirm whether drug residues were or were not present and may require repeat sample collection and testing.

What can cause a drug test to be invalid?

It could be adulterated or created by other sources such as a biological cause or excessive dilution. It is recommended another sample be collected as soon as possible.

What does inconsistent mean on a drug test?

medMATCH reports, if ordered, indicate whether a detected drug was prescribed ("consistent") or not prescribed ("inconsistent"), or whether a prescribed drug was not detected ("inconsistent"). The latter result may indicate noncompliance with the treatment plan, or diversion.

What is considered abnormal if found in the urine?

Abnormal urine color that cannot be explained and does not go away. Blood in your urine, even once. Clear, dark-brown urine. Pink, red, or smoky-brown urine that is not due to a food or medicine.

What is considered to be an abnormal finding in urine?

Cloudiness or an unusual odor can indicate a problem, such as an infection. Protein in urine can make it appear foamy. Blood in the urine can make it look red or brown. Urine color can be influenced by what you've just eaten or by certain drugs you're taking.

How far back does a 10 panel urine test go?

Detection times for a 10-panel drug screen
SubstanceDetection time frame
Marijuana2-5 days for occasional users, and up to 10 days for daily users
Opiates2-3 days
Phencyclidine (PCP)Up to 30 days for chronic users
Barbiturates2 days to 3 weeks depending on if the barbiturate is short- or long-acting
6 more rows
Dec 2, 2022

How long does drug test results take urine?

Basic urine drug screens

Urine tests have some of the fastest turnaround times. Almost all negative results will be available to you 1-2 business days after the testing lab receives the specimen. If additional testing is needed, we may need an extra day or two to confirm the results.

How far back does a lab urine test go?

In general, the detection time is longest in hair, followed by urine and oral fluid. Drugs in hair may be detectable for up to 90 days, whereas drugs in urine are generally detectable for one to seven days (or longer in chronic users) and in oral fluid from five to 48 hours.

What is the most common false positive drug test?

Clinically, a false positive urine drug screen can be due to numerous xenobiotics: dextromethorphan, diphenhydramine, doxylamine, ibuprofen, imipramine, ketamine, meperidine, venlafaxine, buproprion, methylenedioxpyrolvalerone (MDPV), and tramadol.

Can diluted urine give a false negative?

Takeaway. 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.

Is dilute urine good or bad?

Diluted urine occurs when there's too much water in the urine. It means the urine's concentration is weak. As a result, the tester will be unable to properly detect the presence of drugs in the urine.

What happens if you test positive for a drug test but have a prescription?

Positive drug test results that are explained by a legitimate medical explanation, such as a valid prescription, will not be reported to a federal agency.

Does an MRO call if you fail a drug test?

If an initial drug test is negative, the findings are confirmed and the results are sent to the employer. If the initial drug test is positive, the MRO will contact the donor to see if they are on any medications or have any other legitimate medical explanation for the positive result (usually within 24 hours).

What happens if you fail a drug test but have a medical card in PA?

You can't be denied a job or, in most cases, fired from one if you fail a drug test for marijuana in Pennsylvania. As long as you are a Pennsylvania resident, are eligible and received a medical marijuana card, and consume marijuana off work hours, then you can't legally be fired for it.

What 3 things should not be found in a normal urine sample?

The following are not normally found in urine:
  • Hemoglobin.
  • Nitrites.
  • Red blood cells.
  • White blood cells.
Feb 2, 2023

What are three things that are not usually found in normal urine?

A small amount of urine will be looked at under a microscope to check for things that do not belong in normal urine that cannot be seen with the naked eye, including red blood cells, white blood cells (or pus cells), bacteria (germs), or crystals (which are formed from chemicals in the urine and may eventually get ...

What diseases show up in a urine test?

The results of a urine test may indicate the presence of:
  • Diabetes or prediabetes.
  • Chronic kidney disease.
  • Kidney or bladder stones.
  • Kidney or bladder cancer.
  • Bacterial or yeast infections.
  • A urinary tract disorder.
  • Sexually transmitted infections (STIs)
  • Liver or bile duct damage.

What is the flag A on a urine test?

Flag A on a urine test typically indicates the presence of a substance or condition that requires attention. While the exact meaning of Flag A can vary depending on the specific laboratory or testing method used, it generally suggests an abnormality that needs to be addressed.

How do I read my urine test results?

  1. Dark urine: may indicate dehydration.
  2. Brown/green or strong yellow: may indicate presence of bilirubin.
  3. Green: may indicate presence of pseudomonas infection or excretion of cytotoxic drugs, such as mitomycin.
  4. Bright red/red-brown: may indicate presence of blood (haematuria).
Jun 7, 2016

What color is healthy urine?

“Normal urine is pale yellow to amber in color and is clear. Darker urine is often a sign of dehydration. If you notice that your urine is darker than normal and you have no other symptoms, try drinking some more water and see if this helps your urine return to a lighter color,” Alyssa said.

What is the most accurate drug test?

Hair testing is considered one of the most reliable types of drug tests due to its cheat-proof nature. It also has the longest detection window. Because hair testing is able to identify substances up to 90 days after use, it is often used to detect repeat drug use.

How sensitive are lab drug tests?

These screening tests tend to be fairly specific and highly sensitive for the drugs being analyzed. If a non-negative sample is detected, labs utilize technologies like gas chromatography/mass spectrometry (GC/MS) to confirm the presence or absence of specific drugs, thereby preventing false positives.

What is the most common pre employment drug test?


A urinalysis is the only method approved for federally-mandated testing and is often chosen for both regulated and non-regulated employees.


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