Function Health review: Reverse Age Lab vs Function Health
Function Health tests your blood. Reverse Age Lab turns your whole health profile, those results included, into one daily protocol of supplements, diet and exercise.
Function Health is one of the easiest ways to get a full blood panel without going through your own doctor, and its results can be uploaded to Reverse Age Lab. People looking for a Function Health review usually want to know two things: what $365 a year buys, and what to do every day once the results arrive. Here is the honest answer, taken from Function Health's own pages on October 27, 2026.
What Function Health does best
- 160+ lab tests a year, drawn twice a year at 2,000+ labs or at home, for $365 a year, about $1 a day. HSA and FSA funds can pay.
- Clinicians review every result and flag what needs attention, with notes written for you.
- A personalized action plan, with food and supplement guides drawn from your results.
- MRI and CT scans you can add any time through its imaging partner Ezra, with select MRI scans at member prices.
- Every result tracked in one place, shareable with your doctor or an AI, with wearables you can connect.
- It has owned SuppCo, which scores how supplements are made, since May 2026.
What Function Health does not do
- Grade a supplement product on the human studies for your goal. Its guides start from your markers, and SuppCo scores how a product is made, not whether it works.
- Build a nutrition facts panel from what you actually eat and take, to set against your markers.
- Turn your workouts into calories burned and targets, or build a daily schedule of what to take and when. Its pages describe neither.
- Test in New York or New Jersey: its lab membership is not offered there.
What Reverse Age Lab does
Function Health hands you the numbers. Reverse Age Lab is what you do with them every day: Rala builds one Daily Protocol of supplements, diet and exercise from your total health profile and keeps it current, and your Function Health results go into that profile the day you upload them. Every supplement is graded on five evidence tiers from the human studies, tens of millions of real reviews and what the top 10 biohackers have said. It sells nothing.
- A Health Profile of your goals, body, sleep, diet, exercise, supplements and medications, plus test results if you have them.
- One Daily Protocol of supplements, diet and exercise, built from that profile and rebuilt whenever any of it changes.
- A supplement schedule by time of day (on waking, with your first and last meal, before sleep), set to your own wake time, meals and bedtime.
- Every product graded on five evidence tiers from the human studies, real reviews and the top 10 biohackers, and ranked for your goals; any other bottle researched from a picture of its label or barcode.
- Conflicts, interactions, redundancies and synergies across your supplements and medications, with what to add, what to stop and when to take each.
- Diet and exercise suggestions for your goals, with fasting and ketosis guidance where it fits.
- With the Diet & Exercise module: your meals, water and alcohol turned into a nutrition facts panel, added to your supplements and set against your targets and safe upper limits; your weekly workouts turned into calories burned and fat loss, which set your calorie and protein targets.
- Blood work from any lab uploaded, stored and tracked over time, and set against the nutrition facts from your own diet and supplements.
- A dashboard scored red to green: your supplements and goals, diet, exercise, nutrition and blood work, conflicts and redundancies.
- Rala Chat, which knows your profile, your protocol and the research behind each product, and updates your profile when you ask.
| Reverse Age Lab | Function Health | |
|---|---|---|
| Main job | One daily protocol of supplements, diet and exercise, built from your whole health profile. | Lab tests twice a year, explained by clinicians. |
| Blood work | Any labUpload Function Health, InsideTracker or your own doctor's results: stored, tracked and set against your diet. | Its own tests160+ tests a year, drawn twice a year, reviewed by clinicians. |
| Supplements | GradedEvery product on five evidence tiers from human studies, real reviews and the top 10 biohackers. | GuidesSupplement guides from your results; no grade on the product. |
| Daily protocol | Supplements, diet and exerciseOne protocol from your whole health profile. | Action planFrom your results. |
| Supplement schedule | By time of dayOn waking, with meals, before sleep, set to your own day. | Not on its pages |
| Conflicts, interactions, redundancies | YesAcross your supplements and medications, with synergies and timing. | Not on its pages |
| Diet | Suggestions and a nutrition panelYour meals turned into nutrition facts, added to your supplements, against your targets, upper limits and blood work. | Food guidesFrom your results. |
| Exercise | Built inYour weekly workouts turned into calories burned and fat loss, which set your calorie and protein targets and shape the exercise suggestions. | Not on its pages |
| Day-to-day tracking | Dashboard and Rala ChatScored red to green; Rala knows your profile, protocol and the research. | Results over timeClinician notes; share with your doctor or an AI. |
| When it updates | Whenever you changeA new supplement, medication, goal, meal, workout or result rebuilds the protocol. | With each set of resultsTwice a year. |
| Imaging | No | MRI and CTAdded any time through Ezra; select MRI scans at member prices. |
| Price, October 2026 | Foundation $19.99 a month or $179 a year; with the Diet & Exercise module $29.99 a month or $299 a year. 7-day free trial. | $365 a year. MRI, CT and add-on tests cost extra. |
The short version. Want a full blood panel twice a year with a clinician's notes? Function Health does that well. Want one daily protocol of supplements, diet and exercise, built from your goals, medications, meals, workouts and those results, that changes when they do? That is Reverse Age Lab. The two work well together: upload your Function Health results and every marker becomes part of your protocol.
Function Health's features and prices were taken from functionhealth.com on October 27, 2026; "Not on its pages" means its own pages do not describe it. Function Health is a trademark of its owner; Reverse Age Lab is not affiliated with it. Educational only, not medical advice.