1. What should I do if I forget to save one urine sample during the collection?
If you do not have a complete collection, the results will not be valid. You should call your doctor’s office or the laboratory where you obtained your container to ask if you should discontinue the test and begin again another day.
2. Is this test extremely accurate?
There are other, more involved tests that have higher accuracy. However, these involve injecting the patient with a tracer and are more expensive. For most clinical purposes, the accuracy of creatinine clearance is sufficient.
