Final answer:
The renal threshold for glucose is approximately 180 mg/100 ml of blood. This is the point at which the kidneys start to excrete glucose into the urine, a condition called glucosuria, which is significant in diabetes management.
Step-by-step explanation:
Renal Threshold for Glucose
The renal threshold for glucose refers to the blood glucose concentration at which the kidneys start excreting glucose into the urine. This threshold is generally around 180 mg/100 ml of blood. When blood glucose levels exceed this threshold, the condition is known as glucosuria. This threshold represents a key factor in managing conditions such as diabetes mellitus, where high blood glucose levels can become a significant health issue. It is important to understand that the renal threshold can vary from person to person, with some individuals having higher thresholds.
Normal Blood Glucose Levels
Blood glucose levels are maintained within specific ranges. The fasting or post-absorptive state glucose level ranges between 60-90 mg/100 ml, post-prandial (after meal) levels are between 100-140 mg/100 ml, and random blood glucose levels can range between 100-180 mg/100 ml. It's critical to maintain these levels within a normal range to prevent glucosuria and manage conditions like diabetes mellitus, where glucose tolerance testing (GTT) might be used to determine an individual's glucose handling status.