Ready-to-use ELISA kits are available for the detection of nad1, an alias of the protein, NADH dehydrogenase, subunit 1 (complex I). The official gene symbol is ND1. The protein, with a mass of 35.7 kDa and length of 318 residues, is reported to be mitochondrial. It is a member of the Complex I subunit 1 family and may be known by other names, including: MTND1, and NADH dehydrogenase subunit 1.