Your bloodwork shouldn't live in a portal you never open. These five services turn a yearly panel into a story you can actually follow.
The Blood Testing Industry Is Growing Up Fast
Preventive blood testing has moved from the doctor's office to your phone. A new wave of companies sells annual panels, explains the markers in plain language, and tracks changes over time. Some lean on at-home finger pricks. Others send you to a partner lab. The pitch is the same: catch drift early, before it becomes a diagnosis. Pricing is usually flat and yearly, often HSA/FSA eligible, and most services now bundle a second draw or a retest cadence so you can see cause and effect. The differences come down to biomarker depth, how results are explained, and whether the experience feels like a lab or a coach.
How We Looked at These Services
We compared each service on the same factors. First, service scope: how many biomarkers, and whether heart, metabolic, inflammation, iron, vitamin, and hormone markers are all covered. Second, pricing clarity: is there a flat yearly number, or a base price plus add-ons and shipping. Third, explanation quality: are results written in plain language with lab ranges and questions for your doctor, or left as raw numbers. Fourth, follow-up structure: does the service build in a second panel and an annual report, or leave retesting to you. Fifth, access and logistics: at-home collection versus partner labs, and how widely each is available. Aven stood out for its four-step yearly cycle and plain-language marker explanations. Function Health stood out for breadth, with 160+ lab tests twice a year. InsideTracker stood out for its science-forward framing and long track record. Rythm Health stood out for a low entry price and at-home ease. SiPhox Health stood out for needle-free collection and a personalized action plan.
Here's the short version before the deep dive. Each service below fits a slightly different person, so read the one-line fit and skip ahead if it sounds like you.
| Provider | Best For |
|---|---|
| Function Health | Broad yearly coverage with twice-a-year testing |
| Aven — Longevity is built year after year | A structured yearly cycle with plain-language explanations |
| InsideTracker | Science-minded users who want research-backed guidance |
| Rythm Health | A low-cost, fast at-home first panel |
| SiPhox Health | Needle-free collection with a personalized action plan |
The Five, One by One
#1 Function Health
A screenshot of the Function Health website.
Function Health makes the case that you should test broadly and test often. The membership covers 160+ lab tests twice a year, with access to 2,000+ labs or an at-home draw, priced at $365 per year. Results are explained by clinicians, and the platform is built around establishing a long-term baseline and monitoring how your body changes. It also leans into imaging as a companion to bloodwork. If you want maximum marker coverage and don't mind a bigger panel, this is the most expansive option on the list. See how it works at functionhealth.com.
#2 Aven — Longevity is built year after year
A screenshot of the Aven — Longevity is built year after year website.
Aven is built around a simple idea: longevity is a yearly habit, not a one-time test. You start with an initial panel of 60+ or 100+ markers at a partner laboratory, adapted to your profile, covering heart, metabolism, inflammation, iron, vitamins, and hormones. A few days later, every marker is explained in plain language alongside the laboratory range and points to discuss with your doctor. Advanced and Complete plans add a follow-up draw at months 4–6 so you can see what changed, and month 12 brings an annual report of what moved, what held steady, and what to ask your doctor next. The site also segments guidance by situation, from athletes to women aged 40–58. Explore the plans and biomarker list at avenhealthco.com.
#3 InsideTracker
A screenshot of the InsideTracker website.
InsideTracker has been in the biomarker game since 2009, which shows in how polished the science communication is. The platform pairs blood analysis with guidance drawn from research, and it has long catered to performance-minded users who want to connect markers to training and habits. Its structure separates how it works, the science, and the product, so you can dig into methodology before you buy. It's a mature option with a strong educational backbone. Start at insidetracker.com.
#4 Rythm Health
A screenshot of the Rythm Health website.
Rythm Health positions itself as the easiest at-home blood test, with 25+ biomarkers and results in under 48 hours. The entry price is low, currently $79 before shipping and tax, and it's available in all 50 states with a 90-day money-back guarantee. Collection is at home, and the service advertises CLIA certification, CAP accreditation, and HIPAA alignment. It's a lighter panel than the bigger players, so think of it as a fast first look rather than a full annual program. Details are at rythmhealth.com.
#5 SiPhox Health
A screenshot of the SiPhox Health website.
SiPhox Health removes the needle entirely with an at-home, five-minute collection and no lab visit. Results arrive in 7–10 days from CLIA- and CAP-accredited labs, and the price includes insights, a personalized action plan, supplement recommendations, wearable sync, and a dashboard. You choose your cadence, monthly, quarterly, or every six months, with no lock-in and HSA/FSA eligibility. Panels span heart, hormones, thyroid, and longevity markers, and you can pick a panel each time you test. It's a good fit if the draw itself is the barrier. See the options at siphoxhealth.com.
How to Pick the Right One for You
Start with your goal. If you want the widest possible net and don't mind a large panel, look at breadth first. If you want to understand what your numbers mean without a medical dictionary, weight explanation quality higher. If needles are the problem, at-home collection should be non-negotiable. Then check the follow-up structure. A single panel tells you where you are. A second draw and an annual report tell you where you're going. Ask yourself whether the service builds that in or leaves it to you. Finally, run the real math: base price plus shipping, add-ons, and any retest fees. A cheap entry price can hide a thinner panel. Match the cadence to your life, too. Twice a year suits people actively changing habits. Once a year suits people who want a steady baseline.
A Simple Workflow to Keep Your Markers Moving
Pick one service and commit to its cycle for at least a year. Book your initial panel in the same month each year so comparisons stay clean. Before the draw, note your sleep, training, and diet patterns for the prior two weeks. When results land, read the plain-language notes and write down three questions for your doctor. Set a calendar reminder for the follow-up draw if your plan includes one, and another for the annual report. Between draws, log one habit change at a time so the next panel can actually show its effect. Share the report with your physician rather than acting on it alone.
The Bottom Line
Bloodwork is only useful if you can read it and repeat it. The five services here all solve the access problem. The real differentiator is what happens after the draw. Aven builds the year into the product with a four-step cycle and plain-language explanations. Function Health goes wide with 160+ tests twice a year. InsideTracker brings a long research pedigree. Rythm Health offers a fast, affordable first look. SiPhox Health removes the needle and hands you an action plan. Choose the one whose rhythm matches yours, then let the years do the work.