Medical diagnostic apparatus for testing biological age in humans; Medical diagnostic apparatus for testing epigenetic markers and patterns in humans; Medical diagnostic apparatus for testing cellular age in humans; Medical diagnostic apparatus for testing a person's epigenetic markers to assist in determining the person's biological age; Medical specimen collection devices in the nature of at-home health test kits consisting of vials, finger-stick devices, and test strips for the collection of blood, urine, and saliva for use in testing for the presence of medical conditions and levels of health markers, namely, heart health, menopause onset, heavy metals, testosterone, fertility, vitamin D levels, thyroid function, and lifestyle concerns relating to sleep, stress, and weight management; Medical specimen collection devices in the nature of diagnostic kits consisting of vials, finger-stick devices, and test strips for the collection of blood, urine, and saliva for use in testing cellular age in humans; Medical specimen collection devices in the nature of screening test kits comprised of vials, finger-stick devices, and test strips for the collection of biological specimens; Medical specimen collection devices in the nature of screening test kits comprised of vials, finger-stick devices, and test strips for the collection of blood, urine, and saliva for use in testing for the presence of medical conditions and levels of health markers, namely, heart health, menopause onset, heavy metals, testosterone, fertility, vitamin D levels, thyroid function, and lifestyle concerns relating to sleep, stress, and weight management