StackGuide

Testing that changes a decision

Tests & Labs

A test is only worth doing if the result would change what you do. This section is about the short list that clears that bar for most adults — and steering you away from the expensive dashboards that generate anxiety and no action.

3 entries · roughly 9% of what moves the needle

Tests & Labs

Cancer screening

Age- and risk-based screening for a handful of cancers — colorectal, breast, cervical, lung — where catching it early genuinely changes the outcome.

B Moderate evidence Worth it

Tests & Labs

Essential labs

A small panel that actually moves your hand — lipids/ApoB, blood pressure, A1c, and a few targeted tests — instead of an expensive dashboard you'll never act on.

B Moderate evidence Maybe

Tests & Labs

hs-CRP

A cheap marker of low-grade inflammation that adds a little to cardiovascular risk prediction — useful at the margins, not a diagnosis.

C Suggestive evidence Maybe