How long does ibuprofen detectable in urine?

Ibuprofen is rapidly metabolized and eliminated in the urine. The excretion of ibuprofen is virtually complete 24 hours after the last dose. The serum half-life is 1.8 to 2.0 hours.

What happens if a drug test comes back positive?

If a positive test result is reported by a drug screening and the donor admits to using drugs, no further tests need to be done. However, if a result comes back positive and the donor denies having used drugs, a confirmatory test is required, usually Gas Chromatography Mass Spectrometry (GC/MS).

What are the dangers of a false negative drug test?

However, it is actually the false negatives that pose the greater safety risks, because despite having consumed illicit substances, no one who gets a false negative drug test will complain about the result. For any drug test result – whether it’s positive or negative – initial screening tests must be followed by confirmatory testing.

What causes cross reactivity on a drug test?

Many substances can cause cross-reactivity on an immunoassay screen: 1 Antibiotics. 2 Antidepressants. 3 Antihistamines. 4 Antipsychotics. 5 Cold Remedies/Decongestants. 6 (more items)

What can cause a drug screen to come up positive?

Tramadol (Ultram) is used for pain. Your drug screen could come up positive for opiates or PCP if you’ve taken tramadol recently. Phentermine (Adipex-P) is the most prescribed medication for weight loss in the United States.

What can cause a positive drug test for methamphetamine?

Bupropion (generic Wellbutrin). Used as an antidepressant, for weight loss, and smoking cessation, bupropion may lead to a positive screen for amphetamine, methamphetamine, and LSD. Dextromethorphan. Found in Robitussin, Delsym and other over-the-counter cough suppressants.

Are there any medications that can cause a false positive for THC?

Proton pump inhibitors (PPIs) are widely prescribed medications used for the treatment of gastroesophageal reflux disease (GERD) and heartburn symptoms. Taking PPIs daily can result in a false positive urine test for THC.

Can a false positive on a drug test affect a job?

A urine drug screen tests for the presence of certain illegal drugs and prescription medications. You may be more likely to be tested when applying for a job than when playing professional sports, but you could also be affected by a false positive.