Worried about your kidneys? Get clear answers from a kidney doctor.

of people who took the kidney check reported foamy urine or protein in their urine.

My advice: foamy urine isn't always kidney disease, but it's worth one simple test, a urine ACR (albumin–creatinine ratio).

regularly take painkillers like ibuprofen or diclofenac.

My advice: these can strain the kidneys, especially with high BP, diabetes or dehydration. Ask your doctor before using them often.

people thinking of taking creatine had already been told they have kidney disease.

My advice: creatine can raise your creatinine blood result and make kidney tests harder to read. Check with your kidney doctor first.

of people who used the cholesterol check had LDL of 130 mg/dL or more, at a median age of just 34.

My advice: high cholesterol often starts young. Know your number and ask your doctor what target is right for you.