Table 3.

Three DNA methylation testing kits available direct for consumer use and for scientific studies.

Method	Tissue sampled	Price
Index [Elysium Health, USA (48)]	Saliva	$499 (49)
DNAge [Zymo Research, USA (50)]	Blood or Urine	$299 per consumer test
Chronomics [Chronomics, UK (51)]	Saliva	£900–1,499