The DNA test offered at GAD is a sample taken from the inside of the mouth using a swab against the cheek. The swab sample is then sent in a pre-paid envelope to the lab to be processed. The DNA test is based on the genes of a person therefore would only be required once in a lifetime as genetic information will not change. The DNA test results are able to identify how the body responds to and metabolises specific nutrients, which is more effective than a blood test in regards to micronutrient requirements. However, a blood test is able to tell a person the current levels of a particular component within the blood such as vitamins, hormones or electrolytes. With balancing a healthy lifestyle and focusing on any deficiencies found from the blood test the results can improve over a period of time and a retest to check the levels can be performed.