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Doctor insights on: False Positive For Benzodiazepines In Urine Tests

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Dr. Paul Grin
Board Certified, Pain Management
30 years in practice
23M people helped
1

1
Do blood and urine tests test for benzodiazepines?

Do blood and urine tests test for benzodiazepines?

Of course: The screening is most often done using a blood or urine sample. These tests are sometimes administrated as part of an investigation for drug use or abuse. ...Read more

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Dr. Steven Seres
Board Certified
15 years in practice
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Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


Dr. Lori Wagner
Board Certified, Internal Medicine
21 years in practice
786K people helped
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Dr. Steven Seres
Board Certified
15 years in practice
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Dr. Mehdi Moezi
Board Certified, Hematology and Oncology
25 years in practice
105K people helped
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Can two 24 hr 5 hiaa urine tests elevated at 50 be a false positive for carcinoid syndrome if all diet?

Can two 24 hr 5 hiaa urine tests elevated at 50 be a false positive for carcinoid syndrome if all diet?

Could be: If you have symptoms suggestive of carcinoid repeat 24 hour urine collection and also serum chromogranin-a level. Make sure you are not on nexoum or similar for few days. ...Read more

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Dr. Shiao-Yu Lee
Board Certified, Gynecology
455K people helped
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Dr. Steven Seres
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Dr. John Wigneswaran
Board Certified, Nephrology and Dialysis
20 years in practice
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Can Zoloft cause a false positive urine drug screen for benzodiadepines?

Can Zoloft cause a false positive urine drug screen for benzodiadepines?

Possible: It is possible and there is some data to support: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2728940/#__ffn_sectitle This could be a class effect with that class of drugs. Always talk to your doctor for anything medical. ...Read more

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Dr. Robert Killian
Board Certified, General Practice
22 years in practice
327M people helped
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Is there any medical reason for an abnormally large number of false positives for benzodiazepines on urine drug screens?

Is there any medical reason for an abnormally large number of false positives for benzodiazepines on urine drug screens?

Benzodiazepines: Nope. But remember benzos can stay positive in the urine for six weeks. One false positive is occasionally seen, but not repeated testing. ...Read more

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Dr. John Chiu
Board Certified, Allergy and Immunology
51 years in practice
21M people helped
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Could taking 40+ Benadryl cause a positive for benzodiazepines in a urine test?

Could taking 40+ Benadryl cause a positive for benzodiazepines in a urine test?

Shouldn't: They are made of totally different chemicals even though either can make you drowsy. ...Read more

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Dr. Pamela Pappas
Board Certified, Psychiatry
36 years in practice
135M people helped
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I tested positive for benzodiazepine march 6th 2014, after taking 4 kolopin 1mg february 14 2014, why is this still showing up in my urine?

I tested positive for benzodiazepine march 6th 2014, after taking 4 kolopin 1mg  february 14 2014, why is this still showing up in my urine?

Very long half-life: Klonopin has a very long elimination half-life: 18-60 hours. It takes 5 of these half-lives to effectively eliminate the Klonopin from your system (supposing you're not still taking it). So depending on your metabolism this could take 12-14 days. If you're still taking a few of the pills, this would also register positive. ...Read more

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Dr. Pamela Pappas
Board Certified, Psychiatry
36 years in practice
135M people helped
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9
Why do benzodiazepines show positive in my urine and i'm not sure what causes this when i'm not taking anything but blood pressure meds?

False positive?: Some nonsteroidal medications can cause false positives for benzodiazepines: daypro, tolmetin (tolectin) Naproxen (aleve) Etodolac (lodine) and fenoprofen (nalfon). In some cases, the antidepressant zoloft can do it also. http://tinyurl.com/ks79fns i don't know of any antihypertensives known to cause this -- so i'm wondering if you also take some of these other meds? ...Read more

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Dr. Richard Ogletree
Board Certified, Pharmacology
26K people helped
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10
The difference between Benzodiazepine and diazepam? It's a urine test and have seen1-6 weeks and 7-10 days, took 2.5 mg 10days ago first time in 2 yrs

The general term: benzodiazepines refers to a class of medicines used to help with anxiety, sleep, and sometimes seizures. Diazepam is a particular drug in the class. While most of the members of the benzodiazepine class are gone from the body in a few days, the specific drug diazepam (also knwn as Valium in the US) hangs around much longer. ...Read more

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Dr. Anthony Brignoni
102 doctors shared insights

Benzodiazepines Level (Definition)

Testing blood levels of benzodiazepines is not a routine or common clinical test. It is done by simply taking a blood sample and testing it in the lab. It is most commonly done in research studies. An example of clinical use would be when there is a discrepancy between the prescribed dosage and ...Read more


Urinalysis (Definition)

It is a routine test on urine which tests for concentration of urine with specific gravity, screening for glucose, protein, blood, nitrites which is a screening test for infection.And microscopic exam for white blood cells ...Read more


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Dr. Steven Seres
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