Kidney Function Test With Dye. For ct egfr 45 indicates no increased risk of kidney damage from contrast material. Dye excretion test or psp test phenolsulphonphthalein phenol red it is dye of choice for excretory function of kidney.
Kidney function tests usually require a 24 hour urine sample and a blood test. Egfr 30 but less than 45 indicates that while it is safe to get contrast material there is a small risk of causing kidney damage. The ureters are the narrow tubes that carry urine from the kidneys to the bladder.
A 24 hour urine sample is a creatinine clearance test.
Diagnostic tests such as mris ct scans and angiograms are routinely used because they provide important information about many diseases or injuries and can help in diagnosis and treatment. It gives your doctor an idea of how much. The ureters are the narrow tubes that carry urine from the kidneys to the bladder. Kidney function tests usually require a 24 hour urine sample and a blood test.