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Doctor insights on: Test Urine

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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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How do the test strips that doctors have to test urine work?

How do the test strips that doctors have to test urine work?

Good question: Test strips have a number of small pads each 1 is impregnated with chemicals that react with various substances in urine causing little pad to change color. Amount of color change depends upon concentration of substance, acidity & concentration of substance present. 1 pad each 4 specific gravity (concentration), acidity, glucose, protein, ketones, blood, nitrite 4 uti, leucocyte esterase 4 wbcs. ...Read more

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Dealing with Blood in Urine (Checklist)

Rule out infection as a cause with a urinalysis or culture
once
Ask your doctor to review your medications to identify cause
once
Rule out kidney stones with your doctor
once
If male, schedule a prostate exam
once
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Is it possible to get a false negative on a zinc toxicity test? I had zinc, copper and lead testing done. My zinc results in blood and urine were at the high end of normal. My lead was negative but my copper results came back as low. I have all of the

Is it possible to get a false negative on a zinc toxicity test? I had zinc, copper and lead testing done.  My zinc results in blood and urine were at the high end of normal.  My lead was negative but my copper results came back as low.  I have all of the

Any : Any test has a risk of being a false negative or even false positve for that matter. Heavy metal toxicity/poisoning is a very difficult issue, and has been a challenge for a lot of doctors. I recommend you consult a medical toxicologist. These doctors specialize in poison and metal toxicity. If you have already done so, i suggest a second opinion by another doctor in the field. Good luck. ...Read more

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At 3-4 dpo, can hCG levels be 500ml/iu? Some say no way, others say yes. If yes, how? (this would mean a urine test would be positive).

At 3-4 dpo, can hCG levels be 500ml/iu? Some say no way, others say yes. If yes, how? (this would mean a urine test would be positive).

Typically no: It takes several days for the fertilized embryo to travel down the tube and implant in the uterus. Hcg is only made following implantation and would take a few days to rise to 500. You must not have ovulated when you thought you did. ...Read more

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I have green veins showing on hands wrist and legs. this means ? if you have negative pregnancy test urine and blood after sex with light period.

I have green veins showing on hands wrist and legs. this means ? if you have negative pregnancy test urine and blood after sex with light period.

Normal: vein color can vary with indiviuals. The color is usually bluish but can appear greenish based on your skin tone ...Read more

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I am urinating frequently and urine volume is high. I did urine test (culture and sensitivity), sugar but came normal. I dont getup in the night.

I am urinating frequently and  urine volume is high. I did urine test (culture and sensitivity), sugar but came normal. I dont getup in the night.

All is okay: Some use the bathroom frequently while upright whereas when laying down the urge decreases. If you have been drinking a lot of liquid during the day, your chances do making frequent bathroom stops is high. Another thing whether you've been having lower extremity swelling. If so, you may need a through renal evaluation. Otherwise drinking more makes you urinate fore frequently. ...Read more