Breakdown of epigenetic aging tests you can buy now + Sinclair's upcoming test?

Been following this thread and thought I'd breakdown two tests often mentioned here: the Index test and MyDNAge.  
https://healthandwealth.substack.com/p/epigenetic-age-testing

I also talk about the broader implications on how to extend the human lifespan, we must first develop a muscle as a civilization for actually measuring it. Feedback is welcome, subscribing encouraged! 

(shorter Twitter thread version here) 

Also genuinely curious: does anyone know about David Sinclair's involvement with a new epigenetic age test? I first found out about it on Twitter, but haven't found much more about it — comment if you have more details!