Labs are how you stop guessing. Blood pressure, a lipid panel that includes ApoB if you can get it, fasting glucose or insulin, ferritin, TSH, vitamin D, waist. That list outperforms a $1,300 “longevity” PDF. Attia will add more. Stanfield will ask whether the extra test changes a decision. Both are useful.
What is worth paying for
Start with a clinician and a standard panel. Add ApoB, fasting insulin, maybe a DEXA if body comp is the question. CGMs are a short class, not a lifestyle, see metabolism and Casey Means. Genetic kits like 23andMe are ancestry plus a few crumbs, not a protocol. Brecka-style methylation funnels are optional commerce. Wearables (wearables) are trends, not blood.
Retest on a schedule (yearly, or after a real intervention), not weekly. A number without a plan is a hobby. This page feeds longevity and hormones.
FAQ
How often should I get bloodwork?
Yearly for a healthy adult baseline. Sooner if you changed drugs, diet, or you have symptoms. Not every podcast cycle.
Is a biological-age clock worth it?
As a yearly curiosity, maybe. Blood pressure and ApoB will change decisions more often.
Can I order labs without a doctor?
In some places, yes. Interpreting them without context is how people treat themselves into a corner. Have someone who can act on a bad result.
Not a diagnosis. Abnormal labs need a licensed clinician, not a forum.

