Here's something that somehow flew under the radar for most San Franciscans: you can get clinical bloodwork done for free in the city. The catch? You donate blood while you're at it. Honestly, that's barely a catch.

A service called Goodlabs has partnered with Vitalant — the blood donation nonprofit with locations downtown on Bush Street and out at Stonestown — to let donors tack on lab panels to their regular donation appointment. You sign up online, pick your panels, book a slot, roll up your sleeve, and get results back through an app in about a week. That's it. No doctor's visit. No surprise bill from a lab. No insurance runaround.

For a city where a basic urgent care visit can run you hundreds of dollars and where plenty of young workers are navigating high-deductible plans or no insurance at all, this is legitimately useful. Bloodwork is one of those things people put off indefinitely — not because they don't care about their health, but because the system makes it annoying and expensive to be proactive. Goodlabs basically removes both barriers in one appointment.

The Stonestown location reportedly runs quieter if you want to avoid a wait. Downtown gets busy around lunch, which tracks for a Financial District spot where everyone's trying to squeeze errands into a 45-minute break.

And here's the part that makes this a rare civic win: the blood you donate goes to local hospitals. So you're getting free health data and helping the city's blood supply, which is perpetually low. No tax dollars involved. No government program. Just a private partnership that actually makes sense.

We spend a lot of time on this site talking about the ways San Francisco's institutions fail residents. So when something works — when the free market solves a real problem without a committee, a ballot measure, or a $50 million budget line — it's worth shouting out.

If you've been putting off bloodwork because of cost, lack of a primary care doctor, or sheer inertia, this is your nudge. Worst case, you find out your vitamin D is in the basement — which, for a city that Karl the Fog claims six months a year, would surprise absolutely no one.