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Doctor insights on: Urine Test Lab

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Are STD urine test accurate?

Are STD urine test accurate?

Yes, reliable ...: Yes, it's reliable but less than testing the specimens from vaginal fluid / cervical mucus/fluid, especially for trichomonas. Besides, some 75% & 50% of chlamydia-infected women & men have no symptom respectively. So, all women ...Read more

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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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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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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Hcg 50 positive blood test two negative urine please help.

Hcg 50 positive blood test two negative urine please help.

Recheck blood: You need to have the blood levels checked again. You expect the level to about double in 2 days with a normal pregnancy. ...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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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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Docs, could a blood test or urine test detect chlamydia?

Docs, could a blood test or urine test detect chlamydia?

Testing: Chlamydia tests include a culture that may take 5 to 7 days to grow. A direct fluorescent antibody test looks for antigens. A nucleic acid hybridization test or a nucleic acid amplification test looks for chlamydia dna &enzyme –linked immunosorbent assay. Directing sampling uses fluids from cervix, urethra throat, eye (whichever area is impacted). Urine testing is also possible. ...Read more

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Does urine test show std?

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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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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Urine analysis - detected (trace) ketones and bilirubin (detected trace) means what?

Nothing: Especially if you're hungry, you can have +1 ketones and it's normal. You say you have cirrhosis and it is no surprise if you've got a bit of extra conjugated bilirubin in your blood spilling into your urine. I hope the cirrhosis can be addressed; if it's hepatitis C, perhaps you can get a cure with today's meds; if alcohol, perhaps abstinence can reverse it. Be strong & stay proactive. ...Read more

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Will an unrefrigerated urine sample cause an EtG test to test false positive?

Will an unrefrigerated urine sample cause an EtG test to test false positive?

No: ETG detects a metaboloite of alcohol. The modification occurs in the liver. If glucose is present in the urine that could get fermented into alcohol, but not into Etg as that requires an action by the liver. ...Read more

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On urine test results, urine hemoglobin=trace-intact, urine microscopic = indicated, wbc/hpf=0-3, rbc/hpf=0-3. What do these results & terms mean?

On urine test results, urine hemoglobin=trace-intact, urine microscopic = indicated, wbc/hpf=0-3, rbc/hpf=0-3. What do these results & terms mean?

Normal: The WBC and rbc are referring to the number of white blood cells and red blood cells seen in a range of microscopic fields of sampled by the lab technician. The number of these cells (0 to 3) for both types of cell is within the normal limits expected. These normal, scattered red cells are enough to cause a trace of hemoglobin on the chemistry test. So these are all normal results. ...Read more

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Positive blood serum pregnancy test June 27. Urine tests still neg. should I be concerned?

Positive blood serum pregnancy test June 27.  Urine tests still neg.  should I be concerned?

June 27? today 6/22: I think you meant 6/17? Serum pregnancy test can detect pregnancy quite a bit earlier than the urine test can... if you tested positive on 6/17 with serum, the urine test should be coming soon.. any question/concern, consult doc. Good luck. ...Read more

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Why would someone need a leukocyte esterase urine dipstick test?

Why would someone   need a leukocyte esterase urine dipstick test?

Urinary infection: Leukocyte esterase is a surrogate marker for the presence of white blood cells in the urine and usually indicates urinary infection. ...Read more

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Dr. Scott Keith
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Laboratory (Definition)

Is facility that provides controlled conditions in which scientific research, experiments & measurements are performed. An example is medical (clinical) lab where tests are done on clinical specimens in order to get info. About the health of a patient in terms ...Read more