Stool samples can help doctors diagnose some health conditions. Tips for collecting a stool sample include urinating before collecting the sample and using any tools that the sample kit provides.

The at-home colon test uses a stool sample to help look for any signs of colon cancer.

“It is frequently said that the best screening test is the one patients are willing to complete,” a researcher said. However, some experts note that colonoscopies are the gold standard for detecting ...