NAD+ Only – if you only want to know your NAD+ level. A low NAD+ level may be due to, for example, illness or inflammation.

NAD+/NADH – Provides information about your NAD+ and NADH levels and their ratio. These molecules are often measured together because they are oxidized and reduced forms of NAD, both of which are needed for healthy energy production. The NAD+/NADH ratio is a good indicator of mitochondrial and overall metabolic function.

NAD+/NADH + NADP+/NADPH – This test allows for the isolation and measurement of all four NADs. NADP+ and NADPH are phosphorylated forms of NAD and are particularly involved in anabolic reactions, such as the synthesis of fatty acids and cholesterol.

NAD+/NADH + NADP+/NADPH + GSH/GSSG – This test allows for the isolation and measurement of all four NADs and two glutathiones. Glutathione is an antioxidant that participates in preventing cell damage and maintaining resistance.