Blood test subscription: what you get, what it costs, and the catches

Quick answer

A blood test subscription (also sold as a blood test membership) is a plan that charges you on a schedule and sends you, or books you, a repeat lab panel each time. In 2026 there are three models. Per-test cadence: SiPhox charges $149 per test all-in and you choose monthly, quarterly or every six months, which works out at $298 to $1,788 a year. Yearly membership: Function Health ($365) and Superpower ($349) include two venous lab draws and 150 to 160+ tests a year. Monthly per-test: Rythm Health charges $79 a test before shipping.

If you want to test more than twice a year without a needle or a lab visit, the best at home blood test subscription for most people is SiPhox on a quarterly cadence at $596 a year. If you only want the biggest possible panel once or twice a year and do not mind a Quest draw, Function or Superpower give more markers per dollar.

Retest at home every 1, 3 or 6 monthsSiPhox Longevity Essentials: 31 biomarkers per test from an upper-arm draw, $124 plus $25 shipping, switch panels any cycle.

See SiPhox plans

What a subscription gets you vs one-off tests

You do not need a subscription to get blood work without a doctor. Labcorp OnDemand sells a Comprehensive Health Test (CMP, CBC, lipids, HbA1c and urinalysis) for $189, and SiPhox sells each core panel as a one-off kit for $149. A subscription earns its place when you want the same markers measured repeatedly, because one result is a snapshot. The American Urological Association, for example, says low testosterone should only be diagnosed after two early morning measurements on separate days.

The catch is the obvious one: a subscription keeps charging after your motivation fades. We cover the renewal rules below.

The three blood test subscription models

1. Per-test cadence (SiPhox Health)

You pay per testing cycle, not per year. SiPhox charges $124 plus $25 US shipping per test and advertises $99 plus shipping for a new member's first test. You pick monthly, quarterly or every six months, and each cycle you can switch between four included panels: Longevity Essentials (31 markers), Heart & Metabolic (28), Thyroid Focus (21) and Hormone Focus (14). Ultimate 360 (62 markers) costs $125 more per test. Collection is at home with the needle-free EasyDraw arm device. Our SiPhox review covers the whole service and SiPhox cost works through every price.

2. Yearly membership with lab draws (Function Health, Superpower)

One annual fee covers two venous draws at a Quest lab, an initial panel and a retest. Function Health is $365 a year for 160+ lab tests and includes clinician notes on results. Superpower is $349 a year for 150+ markers and says you can cancel any time, with the membership staying active to the end of the paid year. At-home draws cost extra on both. See our Function Health review and Function Health vs Superpower.

3. Monthly per-test plans (Rythm Health, and InsideTracker's hybrid)

Rythm Health charges $79 a test on a monthly plan (first test $59.25), measures 25+ markers from an upper-arm device, and lets you skip up to 90 days or cancel without fees. It quotes results within 48 hours once the lab has the sample. InsideTracker is a hybrid: a $149 yearly membership that renews at full price, plus paid blood tests; its Ultimate plan is $489 for the membership and one test. Details in our Rythm Health review and InsideTracker review.

Yearly cost of each blood test subscription

Prices below were read from each company's site on September 29, 2026 and include SiPhox's $25 shipping per test. Marker counts are per test for SiPhox and Rythm, and per year for the lab-draw memberships.

Two things the table hides. First, SiPhox's prepay options and intro offers change the first year, so check the current SiPhox offers. Second, Function and Superpower cost more in New York and New Jersey, and SiPhox does not serve New York or Hawaii at all.

The chart makes the trade-off plain: the two lab-draw memberships sit at the cheap end because they include only two draws, while SiPhox's cost scales with how often you test. At two tests a year SiPhox is the cheapest plan on the list; at twelve it is the most expensive.

Cost per biomarker result

Divide the yearly cost by the number of marker results you get back and the picture flips. Function Health works out at about $2.28 per test result and Superpower about $2.33. SiPhox quarterly on Longevity Essentials gives 124 results for $596, or about $4.81 each. Rythm is about $3.70 a marker if you pay about $100 all-in per test for its 27-marker men's panel.

That does not make the lab-draw memberships better for everyone. Marker counts include calculated ratios on SiPhox, and "160 tests" on Function includes markers most people will never act on. What matters is the cost of the markers you want, as often as you want them. Our blood test cost calculator does that math for your own list, and the at-home blood test cost guide compares one-off prices.

Cancellation and auto-renew catches

Billing complaints are a normal part of subscription health services. In the 20 most recent one-star Trustpilot reviews of SiPhox we read, 6 were billing or renewal disputes. Most are avoidable if you know the rules before you join.

• SiPhox renews on your cadence until you cancel. Its terms say the subscription renews automatically and indefinitely. You can change the cadence or cancel from your account portal. There is no refund for a period once that period's kit has shipped, so cancel before the ship date. If you prepaid for a year, cancelling stops the renewal at the end of that period.
• Intro prices end. SiPhox's $99 first test renews at $124 plus $25 shipping. Rythm's $59.25 first test becomes $79.
• Shipping is extra. SiPhox charges $25 per test in the US and $50 to Canada, on every renewal.
• InsideTracker's membership renews yearly at $149, with an email reminder two weeks before.
• Superpower lets you cancel any time with no fee, and your membership runs to the end of the paid year.
• Unused kits still count. A kit that sits in a drawer was still paid for. If you are not using them, move to a six-month cadence rather than let kits pile up.

Who benefits from frequent testing

Most healthy adults with normal results do not need blood work every month. Frequent testing is useful when a number is expected to move and you want to see whether it does:

• After a change to diet, exercise or cholesterol medication, to see how ApoB and LDL respond. Our ApoB test guide covers where to get it.
• Borderline blood sugar. An HbA1c of 5.7% to 6.4% is in the prediabetes range. HbA1c reflects roughly the last 2 to 3 months, so quarterly testing matches how it works.
• Testosterone therapy. The AUA guideline calls for checking levels after starting and then every 6 to 12 months. See our at-home testosterone test page.
• GLP-1 medication, where people want to track lipids, liver markers and nutrients as weight falls. See the GLP-1 blood test guide.

If you are healthy and simply curious, two tests a year is plenty. Also remember that many insurance plans cover cholesterol screening and, for adults 40 to 70 who are overweight, type 2 diabetes screening at no cost when your doctor orders it.

A year on a blood test subscription: worked example

How the timing works in practice

Each SiPhox renewal ships a kit within about 3 days, it arrives in 3 to 5 days, you send it back overnight, and SiPhox quotes results 7 to 10 days after the lab receives it. From renewal to results is roughly two to three weeks by our count, so a quarterly cadence gives you a fresh number about every 13 weeks. Function Health quotes first results in about 48 hours after a Quest draw, but there are only two draws a year to wait for.

Five questions to answer before you subscribe

1. Which markers do I want repeated? Write down two or three. If none needs repeating, a one-off test is cheaper.
2. How often will the number actually change? HbA1c reflects about 2 to 3 months, so monthly HbA1c adds little; quarterly matches it.
3. What is the all-in price per test? Add shipping, draw fees and add-ons. SiPhox's $124 is $149 with shipping.
4. What does the intro price renew at? $99 becomes $124 on SiPhox; $59.25 becomes $79 on Rythm.
5. Where do I cancel, and by when? On SiPhox, before the next kit ships; on Superpower, any time with the year running out.

How to pick a blood test subscription

Still deciding between the two biggest names? Read SiPhox vs Function Health. You can pay for all of these with pre-tax money; see HSA and FSA blood tests.

Start with one test, keep what worksChoose a panel and a cadence, switch or cancel from your account. HSA and FSA cards accepted.

Check SiPhox price

Frequently asked questions