In a 40-year-old patient who is obese with thirst, polyuria and uOSMO 800 mOsm/kg and urine pH 6.0, what is the likely diabetes type?

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Multiple Choice

In a 40-year-old patient who is obese with thirst, polyuria and uOSMO 800 mOsm/kg and urine pH 6.0, what is the likely diabetes type?

This question tests that adults can develop autoimmune (Type I) diabetes, not just insulin resistance (Type II). There is a form called latent autoimmune diabetes in adults (LADA) where people may be around middle age and even overweight, but pancreas beta cells are gradually destroyed by autoimmunity. That means they end up with insulin deficiency and classic diabetes symptoms like thirst and polyuria, just like younger people with Type I. The urine finding of very concentrated urine (high uOSMO) with a normal-to-mildly acidic pH fits a state of hyperglycemia with dehydration from osmotic diuresis, which is consistent with frank diabetes, regardless of BMI. Gestational diabetes is restricted to pregnancy, and prediabetes typically lacks symptomatic polyuria and osmotic diuresis. So, in this adult with these symptoms, recognizing that Type I can present in adulthood (LADA) makes Type I the best match.

This question tests that adults can develop autoimmune (Type I) diabetes, not just insulin resistance (Type II). There is a form called latent autoimmune diabetes in adults (LADA) where people may be around middle age and even overweight, but pancreas beta cells are gradually destroyed by autoimmunity. That means they end up with insulin deficiency and classic diabetes symptoms like thirst and polyuria, just like younger people with Type I.

The urine finding of very concentrated urine (high uOSMO) with a normal-to-mildly acidic pH fits a state of hyperglycemia with dehydration from osmotic diuresis, which is consistent with frank diabetes, regardless of BMI. Gestational diabetes is restricted to pregnancy, and prediabetes typically lacks symptomatic polyuria and osmotic diuresis. So, in this adult with these symptoms, recognizing that Type I can present in adulthood (LADA) makes Type I the best match.

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