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The Question
Mon Jul 16 17:43:30 UTC 2012

Is the GTT biased against 1-kidney patients?
Asked By: emmaleighs  

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My 1-hour glucose test came back "abnormal" by 10 points. So, I did the 3hour and failed (my fasting level was normal, my 1hour was abnormal by 10 points, at 2hours I was abnormal by 4 points and the 3hour was normal). When I called my nephrologist to tell him my OB sent me off to a diabetes doctor for GD, he went off on a fit saying that the GD 3 hour GTT was biased against 1-kidney people because it's "created to screen 2 kidney patients". He went on to say that because I only have 1 kidney that as long as I "failed" by no more than 15 points, that I should be considered normal, or not diabetic. I can't find anything information regarding solitary kidney and the glucose tests. Should I stick with what my nephro told me or see a diabetes doctor? I'm 22, healthy, no family history of diabetes, prepregnancy weight was 100lbs (125 right now at 29 weeks), never had any kidney problems (found out about solitary kidney at 19, gfr was 59), rapid GFR showed at 133 (pre-preg was 95).
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Expert Answers (1)
2012-08-10 20:35:48.0

Hello Emmaleighs
Thank you for bringing your concerns to dLife,

Your nephrologist could be right that the glucose tolerence testing is biased against a person with one kidney but is that a reason not to see someone to investigate this further? For what ever reason, your glucose levels did not meet the normal levels. During your pregnancy, you need to be as healthy as possible with normal glucose levels whether you have one or two kidneys. I am sure you do not want you or your child to have any complications of high glucose levels.

I suggest you see the recommended specialists, try to get these providers to communicate with each other and come up with a plan of care for your pregnancy. Your Ob-Gyn should be the doctor that gets all these reports from these specialists and coordinates your care.

Your next step is to ask your Ob-Gyn what is best for you.

Answered By: Rita Juray
Accreditations: RN, MLT-ASCP, CCM, CDE
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*** All information contained on dLife.com is intended for informational and educational purposes only. Our Expert Q&A is not intended to be a replacement or substitute for consultation with a qualified medical professional or for professional medical advice related to diabetes or another medical condition. Please contact your physician or medical professional with any questions and concerns about your medical condition.

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