Urine glucose in diabetic

[RisingSun]

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I know that the PCT can completely filter glucose up to around a serum glucose of 180 or 200 mg/dL, but what is the level at which a standard dip stick test done in the office will be able to pick up glucose in the urine? I didn't think that those tests were so sensitive, but apparently (according to a question that I got wrong today) they are able to detect glucose in the urine at a serum glucose of 200.

Do you guys know the answer?

 

[Cliff Huxtable]

My guess would be that:

Up to a serum glucose of 200 mg/dL, the PCT can reabsorb ALL of the glucose. So if serum glucose is above 200, glucose will start to show up in urine. (Serum glucose less than 200 will have NO glucose in urine [disregarding splay]).

 

[RisingSun]

Thanks CH. I know that glucose begins to show up in the urine at 200 mg/dL, but at that level (200) it is detectable with your standard office urine test?

 

[Mortal_Lessons]

Thanks CH. I know that glucose begins to show up in the urine at 200 mg/dL, but at that level (200) it is detectable with your standard office urine test?

I think the dipstick is quite sensitive for glucose in the urine. Anything that's being spilled into your urine should show up on dipstick analysis. However, I don't understand the utility of measuring a urine glucose at a regular office visit in the suspected diabetic other than assessing for diabetic nephropathy, but then you'd look for albumin in the urine, and a dipstick would not be helpful if the patient was just starting to spill protein into the urine (microalbuminuria). You diagnose diabetes based on blood glucose levels.

 

[Guyton Killah]

glucosuria occurs when blood glocuse exceeds renal threshold .leading to osmotic diuresis, ie poluria, polydipsia and hyponatremia. I m not sure about the ¥£€¢$ tho.

 

[OveractiveBrain]

Your question probably had a pretty little graph that accompanied it. The graph probably showed you a splay, that happened right around 200. Then the glucose concentration just kept increasing in teh urine from there. And then you probably had to chose between 200 250 and 300.

People have such a hard time with multiple choice questions. It has nothing to do with "how sensitive is the real dipstick test" and everything to do with "what did the graph tell me." If you start seeing glucose in the urine at 200mg, PICK THAT ANSWER. Its a multiple choice question, not the real f*cking world. Dont get mad that you didnt get it right, dont come here and say THE QUESTION SAID I WAS WRONG WHY WHY WHY! Take it for what it is, be sad you got it wrong, and dont get it wrong next time!