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Doctor insights on: Urine Cotinine Test Results

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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


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Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?

Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?

False negative PG: A false pregnancy test is possible however, in this case you also have a negative blood pregnancy test which is far more accurate. ...Read more

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Had urine test, some results urine occult blood negative trace Urine protein screen negative, trace mg\dl negative. is this normal reading with trace ?

Had urine test, some results urine occult blood negative trace Urine protein screen negative, trace mg\dl negative. is this normal reading with trace ?

Normal: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is in the best position to do that. Having said that, the results you provided are normal. ...Read more

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Does urine test show std?

Not routine tests: Routine urine testing does not look for stds. However urine can be tested for gonococcal and chlamydia dna which are stds. ...Read more

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My metanephrine free urine was 51, blood test was 63, normetanephrine free urine 181, blood test 150- total urine 232, blood test 213. Normal?

My metanephrine free urine was 51, blood test was 63, normetanephrine free urine 181, blood test 150- total urine 232, blood test 213. Normal?

Sounds normal if....: the upper limits for blood metanephrine and normetanephrine are 0.50nm/l and 0.90nm/l. Urinary levels are, respectively: Total 24 hr. metanephrine =1.3mg for urine; and total plasma ME+NME is less than 205pg/ml. It sound as though you're within the normal ranges, but depending on the units of measure, which vary from lab to lab and med ctr to med ctr., you may not. Meet w/ your endocrinologist. ...Read more

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Blood test. Pos for nitrates in urine?

Not sure: Positive nitrites in the urine is indicative of a urinary tract infection. I am not sure what blood test has to do with it, though. ...Read more

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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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Blood test shows élévated bilirubin , urine test négative for bilirubin. Any explanation??

Blood test shows élévated bilirubin , urine test négative for bilirubin. Any explanation??

Unconjugated: Bilirubin exists in the blood in both the conjugated and Unconjugated forms. Only the conjugated can enter the urine. If you feel well, and this is new, you very likely have Gilbert's non-disease. Best wishes. ...Read more

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Will dilute urine hold positive proteinuria results?

Will dilute urine hold positive proteinuria results?

Not really: The protein is an absolute number.>3 grams is bad.The volume of urine is not as critical at this early stage. ...Read more

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Will obgyn test for cotinine or nicotine in routine urine samples?

Will obgyn test for cotinine or nicotine in routine urine samples?

No: These tests will be done only with your knowledge and consent as part of a monitoring process. ...Read more

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Test strip showed positive for Ketones and Leukocytes when testing my urine..why?

Test strip showed positive for Ketones and Leukocytes when testing my urine..why?

UTI: Leukocytes in urine can be normal, but is often a sign of urinary tract infections. Ketones can be present in a number of conditons, but are often present with subtle dehydration or due to dietary reasons. This needs to be discussed with your doctor but may be normal or a sign of a urinary tract infection. Unless you are exhibiting signs of an infection, no antibiotic treatment is needed ...Read more

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I have been smoking 8-10 cigarettes for last 10 years.I have a urine cotinine test in 20 days. Will I test Negative if i quit smoking 10 days before the test?

I have been smoking 8-10 cigarettes for last 10 years.I have a urine cotinine test in 20 days. Will I test Negative if i quit smoking 10 days before the test?

Cotinine: Levels of cotinine detected in urine vary due to a variety of factors including; the type of tobacco used, filtered vs. non-filtered cigarette, how heavily the individual inhaled the smoke, the length of time an individual chewed, the number of cigarettes smoked per day, and the concentration of the urine. These variables make it difficult to determine exactly how much an individual uses tobacco. ...Read more

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I took a urine cotinine test this morning for pre employment and I stopped chewing tobacco 11 days ago, will I pass? I'm done with nicotine.

I took a urine cotinine test this morning for pre employment and I stopped chewing tobacco 11 days ago, will I pass? I'm done with nicotine.

Pee test 4 nicotine: I took a urine cotinine test this morning for pre employment and I stopped chewing tobacco 11 days ago, will I pass? I'm done with nicotine. ANS: Good judgement on stopping. Depends on which test they use and how much had been stored in your body. So let us know. If + tell them that you want to be retested as it may have been the chewing. Suspect they are most interested in smoking. ...Read more