The present invention is directed to a toilet which is a medical device and which includes multiple sensors and mechanisms for analyzing health metrics that may include biomarkers. The toilet is in communication with a computer processer that is programmed to evaluate the validity of collected health metrics. One set of metrics may inform the validity of another set of metrics. Each data point within the multiple health metrics is assigned a weight value that is an indicator of its validity. Data points may be excluded from calculations if deemed to be invalid. Data points may also be flagged as requiring additional information about the user to determine its validity or interpretation. Methods of using the toilet to assess the health status of a user is also disclosed.