At what level do dogs typically reach the renal threshold for glucose?

The renal threshold for glucose in dogs is typically around 180-220 mg/dl. This threshold refers to the plasma glucose concentration at which the kidneys begin to excrete glucose into the urine. Under normal circumstances, when blood glucose levels remain below this threshold, glucose is reabsorbed completely in the proximal convoluted tubules of the nephron. When blood glucose exceeds this threshold, the reabsorptive capacity of the renal tubules is overwhelmed, resulting in glucose appearing in the urine. This phenomenon is often observed in conditions such as diabetes mellitus, where elevated blood glucose levels persist. Thus, the range of 180-220 mg/dl is recognized as the correct renal threshold for glucose in dogs, making it the appropriate answer.