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Multiple Choice

Urinalysis shows glucose 2+, protein 1+, ketones 3+ in a patient with elevated glucose. Which condition is most supported by these findings?

When blood glucose is markedly elevated and urine shows both glucose and ketones, the body is in a state of insulin deficiency with increased fat breakdown and ketone production. This combination points to diabetic ketoacidosis, where lack of insulin drives lipolysis and formation of ketone bodies, while high glucose causes the kidneys to excrete glucose (glucosuria) and pull water along (osmotic diuresis), leading to dehydration. Chronic kidney disease can cause protein in the urine, but it doesn’t typically produce ketones in the urine or the acute metabolic context of high glucose with ketogenesis. A urinary tract infection would usually present with signs of infection (notably leukocytes or nitrites) rather than prominent ketonuria. Dehydration alone can cause concentration of urine and may accompany many conditions, but without ketones it wouldn’t explain the ketogenesis driven by insulin deficiency. Thus, the presence of both glucosuria and ketonuria in the setting of elevated glucose best fits diabetic ketoacidosis.

When blood glucose is markedly elevated and urine shows both glucose and ketones, the body is in a state of insulin deficiency with increased fat breakdown and ketone production. This combination points to diabetic ketoacidosis, where lack of insulin drives lipolysis and formation of ketone bodies, while high glucose causes the kidneys to excrete glucose (glucosuria) and pull water along (osmotic diuresis), leading to dehydration.

Chronic kidney disease can cause protein in the urine, but it doesn’t typically produce ketones in the urine or the acute metabolic context of high glucose with ketogenesis. A urinary tract infection would usually present with signs of infection (notably leukocytes or nitrites) rather than prominent ketonuria. Dehydration alone can cause concentration of urine and may accompany many conditions, but without ketones it wouldn’t explain the ketogenesis driven by insulin deficiency.

Thus, the presence of both glucosuria and ketonuria in the setting of elevated glucose best fits diabetic ketoacidosis.