Function Health Review: Is the $365 Biomarker Membership Worth It?

Is Function Health worth it?

Function Health is worth it if you want a deep, 160-plus biomarker blood panel without going through insurance, and you can absorb the extra lab-draw and add-on fees on top of the $365 yearly membership functionhealth.com. Skip it if you want cheap testing, phone support, or easy data export.

Reviewers back up the core promise. Trustpilot rates it 4.3 out of 5 across 1,322 reviews, and the sheer number of tests is the single most-praised feature across every source we read trustpilot.com.

The complaints cluster just as clearly. Support is a chatbot, not a person. Your results are hard to move off the platform. And the real bill runs well past the sticker once Quest fees and add-ons land.

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What is Function Health?

Function Health is a subscription membership for lab testing. It is not a clinic, and it is not a wearable. You pay once a year, book a blood draw at a Quest location, and get your numbers back in a dashboard.

The membership covers 160-plus biomarkers across two scheduled draws a year, plus on-demand testing you can add. That means the usual cholesterol and blood-sugar markers, plus hormones, thyroid, vitamins, and inflammation markers your regular doctor may not order.

There are 2,000-plus Quest draw sites across the US, so a location is rarely far. Every result gets a clinician review with written notes. No referral or insurance is required.

One honest caveat on the headline number. A Reddit analysis argues the "160+ tests" figure counts test events, not unique biomarkers, and pegs the real breadth closer to 100 markers a year reddit.com.

The Function Health app showing 147 biomarkers, in-range counts and a 37.2 biological age on a phone

How much does Function Health cost?

The Function Health membership is $365 a year. That number changed recently, and the change caused a stir.

Function launched at $499 a year. It later dropped new-member pricing to $365, which Redditors tie to cheaper rivals like Superpower undercutting it. Existing members were first denied the lower rate. One 60-upvote thread met that with cancellation threats, before Function reversed course and gave everyone the same price reddit.com.

The sticker price is not the whole bill. You pay Quest separately for the blood draw. In an early-2025 tester account, that ran just over $200 per visit, and it varies by state dannb.org. Add-on tests cost roughly $69 to $549 each. Stack those up and reviewers report totals well past $1,000.

Here is how the yearly membership compares with other biomarker-testing services:

A few notes on the table. Superpower is the direct budget rival at $199. Everlab is Australia-only and priced in Australian dollars. Levels Core bundles a glucose monitor with its lab panels, so it is not a like-for-like blood-test membership.

What do users like about Function Health?

The breadth of testing, first and loudest. Across Trustpilot, the App Store, and Reddit, the most consistent praise is getting 100-plus markers in one go, including labs a regular doctor will not order.

That breadth surfaces real findings. One Trustpilot member learned in their first year that they were celiac, low on vitamin D, and off on hormones. That is the kind of result people say made the fee worth it.

Turnaround gets good marks too. In an early-2025 tester account, first results appeared about 28 hours after the draw. Recent Trustpilot reviews echo it, with "quick turnaround" and "sooner than I expected."

The app earns quiet praise. The author of a 74-upvote one-year review called the interface clean and easy to navigate reddit.com.

Opinions on the clinician notes split. That early-2025 tester found them genuinely useful and worth the membership. Fresher Reddit sentiment runs the other way, which the next section covers.

Function Health member cards showing individual biomarker results and biological age

What are the most common Function Health complaints?

Support tops the list. Reviewers describe a chatbot and email only, with no phone line and different reps giving different answers apps.apple.com. One App Store reviewer could not reach a person to fix a billing mistake.

Then there is data lock-in, the biggest theme to emerge from the full Reddit threads. Users report that Function stopped letting Quest post results to their own MyQuest portal. There is no Apple Health integration. Export is a PDF from the website, not a spreadsheet reddit.com.

One nuance keeps this honest. A "predatory business" thread claimed you cannot download results at all, and its own top comments pushed back, showing that PDF download and doctor-sharing do work reddit.com. So the real gripe is portal sync and machine-readable export, not getting a PDF.

The clinician notes draw fire. A recent top comment says feeding raw results to ChatGPT gave more helpful feedback than Function's own notes. Others call the write-ups generic.

Billing stings too. Reviewers report auto-renewal at the old $499 rate, with only partial refunds after cancellation. Several also describe fear-framed upselling of pricey add-ons.

Who should use Function Health?

Function Health fits proactive people who want a deep blood-test baseline without going through insurance, and who will actually act on the numbers. If you like tracking trends year over year, it delivers.

It is a strong replacement for a thin annual physical. In one 2025 thread, a member on a high-deductible plan found their physical's blood draw cost nearly as much as Function, and told them far less reddit.com.

It is a poor fit if money is tight. Superpower runs the same idea for $199 a year. Skip it too if you have a real needle phobia, since a blood draw is required.

And skip it if you need your data to travel. Portal sync and clean exports are not there yet.

Function Health app features: private AI chat, protocols, 160+ lab tests and health records

How we researched this review

We did not test Function Health ourselves. This review aggregates roughly 340 distinct user opinions across four source types, weighted toward what recurs and what earns upvotes.

The sources: Trustpilot, at 4.3 out of 5 across 1,322 reviews; the Apple App Store, at 4.9 out of 5 across about 23,000 ratings, with 10 full reviews read closely; two published tester reviews, from Gene Food (John O'Connor) and Dann Berg mygenefood.com; and 10 full Reddit threads, about 300 comments across r/Function_Health, r/PeterAttia, and r/FunctionalMedicine.

We classed every quote by age. Only material from the last 12 months is used as current sentiment. Older accounts are date-framed or kept as background.

A few caveats on bias. Function pays for a Trustpilot subscription, which skews its review base toward prompted reviews. Competitor founders reply inside several Reddit threads. And Dann Berg's post carries a referral link.

Function Health FAQ

Is Function Health worth the money?

For people who want a broad biomarker baseline and will act on it, most reviewers say yes. If you want cheap testing or phone support, it is a weaker fit.

Does Function Health take insurance?

No. You pay the $365 membership out of pocket, though it is HSA and FSA eligible functionhealth.com. Quest draw fees are billed separately.

Can you export your Function Health results?

You can download a PDF from the website and share it with your doctor. There is no spreadsheet export and no Apple Health sync, and results no longer post to your MyQuest portal.

How many biomarkers does Function Health test?

Function markets 160-plus tests a year. A Reddit analysis argues that counts test events, and puts the true breadth closer to 100 unique biomarkers.