Please choose the correct ending to complete the given sentence: Health: [header] How to test kidney function [title] See your physician for a urine " acr " to test your kidney function. [step] The urine " acr " stands for the " albumin to creatinine ratio. " albumin is a protein that is normally present in your blood, and that should generally not be filtered in excess quantities through your kidneys into your urine.

Ending1: You should have a doctor examine your kidney for this protein so they can conduct accurate tests. In addition, you can purchase albumin testing kits at your local pharmacy or at a drug store. Ending2: [substeps] Regular urine tests are unlikely to provide accurate results. [title] Check the ph level of your urine. Ending3: [substeps] A urine test reveals where your kidneys are located in your body, which will make them easier to safely diagnose. A urine test is beneficial if you have abnormal kidney function in your body. Ending4: It is for this reason that protein in your urine (such as albumin) can be indicative of kidney disease. [substeps] If your urine acr comes back " positive, " the test should be repeated for confirmation.

Answer format: ending1/ending2/ending3/ending4