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A female asked:

what does high urine creatinine of 390.1mg/dl mean but everything else is normal

2 doctor answers3 doctors weighed in
Dr. Tarek Naguib
Nephrology and Dialysis 40 years experience
A few possibilities: 390.1 mg per dl is not high if the 24 hr urine volume is 400-500 ml. In this case you may have dehydration on the day of the collection. Not necessarily on other days! if the urine output is larger, you either have a proportionally lager muscle mass or lab error. Heavy physical activity can increase urine creatinine too. In view of normal blood work, shouldn't worry about having kidney disease.
Dr. Jack Rubin
Nephrology and Dialysis 48 years experience
Dehydration: It appears that you may have dehyrdated cauisng hypernatremic (hypertonic) dehydration. This occurs when the lost fluid contains less sodium than the blood (loss of hypotonic fluid). Relatively less sodium than water is lost. Please be sure blood glucose, sodium and chloride levels were normal. I would see your doctor and have the urine test repeated along with a urinary sodium level.

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Dr. Simon Kimm
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Paruresis.: Paruresis is the avoidance of, or the inability to use the toilet in the presence of others. It is listed in the dsm-iv, the classification manual used by psychiatrists, as a social phobia. This can be a serious condition & an issue in cases of employer-based urine drug screening. For those who experience significant anxiety, treatments such as cognitive-behavioral therapy & support groups exist.

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