What does an iohexol clearance test determine?

What does an iohexol clearance test determine?

• A. Estimated GFR in dogs and cats
• B. Liver function
• C. Blood glucose values
• D. Food sensativity

Answer: (A)

Iohexol clearance is used to estimate how well kidneys are filtering the blood, specifically the glomerular filtration rate in dogs and cats. Iohexol is a small contrast agent that is freely filtered by the glomeruli and is not significantly secreted or reabsorbed by the tubules, so the rate at which it is removed from the blood reflects the functioning of the filtration units in the kidneys. By administering iohexol and tracking its concentration in blood (and sometimes urine) over time, clinicians calculate the clearance value, which serves as an estimate of GFR and overall renal function. This helps detect reduced kidney function earlier than some routine tests. Liver function is assessed by liver enzymes and bilirubin, not iohexol clearance. Blood glucose values are measured with glucose testing, not a clearance test. Food sensitivity is evaluated through dietary challenges or allergy testing, not renal clearance.

Iohexol clearance is used to estimate how well kidneys are filtering the blood, specifically the glomerular filtration rate in dogs and cats. Iohexol is a small contrast agent that is freely filtered by the glomeruli and is not significantly secreted or reabsorbed by the tubules, so the rate at which it is removed from the blood reflects the functioning of the filtration units in the kidneys. By administering iohexol and tracking its concentration in blood (and sometimes urine) over time, clinicians calculate the clearance value, which serves as an estimate of GFR and overall renal function. This helps detect reduced kidney function earlier than some routine tests.

Liver function is assessed by liver enzymes and bilirubin, not iohexol clearance. Blood glucose values are measured with glucose testing, not a clearance test. Food sensitivity is evaluated through dietary challenges or allergy testing, not renal clearance.