A Body Fat test and a Body Mass Index (BMI) are not the same. A BMI measures a catagory, while a Body Fat test identifies the actual amount and ratio of Body Fat to lean muscle. Every Health Screening done by the BioFitness Institute is scientifically correct! When computed your results will be specific to you, and no one else. All the BioFitness Institute Health Screening tests have passed peer review, and are professionally accepted as accurate. Therefore, you should take these tests seriously, follow the procedures, and enter real information. Your results from the BioFitness Institute Health Screenings are not one size fits all, pulp fitness. Any small change in the information you enter will change the results you recieve. So if you truely desire to know where you actually stand and what to do about improving your results, be careful and consiencious in how you take your BioFitness Institute Health Screening. Don't hurry, read and follow directions! The benefits will be yours!