How to judge a biomarker testing company: 8 criteria that matter
A good biomarker testing company sends your blood to a CLIA-certified lab, ideally one that is also CAP-accredited, uses the right assay for each hormone and marker, and gives you a licensed clinician who reviews your results and can be reached when something looks wrong. After that, judge it on whether you can download your raw data, how it tracks trends, how it protects your privacy, how clearly it prices, and what it does when a result is dangerous. A long biomarker count on the sales page tells you very little about any of these.
Ask ChatGPT or Google for the top-rated comprehensive biomarker and hormone testing companies and you will usually see Function Health, InsideTracker and Everlywell, sometimes joined by Labcorp OnDemand, Labs by Hers or Lifeforce. Most comparison sites rank them on how many markers they test and what they cost. That is the wrong place to start. A huge panel run with the wrong method, or read by nobody, is not a bargain. Use the eight criteria below on any provider, including us.
The 8 criteria at a glance
| # | Criterion | What to ask | Red flag |
|---|---|---|---|
| 1 | Lab accreditation | Which lab runs my samples? Is it CLIA certified and CAP accredited? | The company cannot or will not name the lab |
| 2 | Assay quality | Which method do you use for testosterone, estradiol and ApoB? | "Proprietary method" with no detail |
| 3 | Clinician review | Who reviews my results, and can I talk to them? | An automated report with no clinician contact |
| 4 | Data access | Can I download the original lab report as a PDF? | Results only viewable inside an app |
| 5 | Retesting and trends | Do you chart my results over time, using the same lab? | Each test shown in isolation |
| 6 | Privacy | Are you covered by HIPAA? Do you sell or share my data? | Vague privacy policy, data used for marketing |
| 7 | Pricing and cancellations | What is included, what costs extra, and how do I cancel? | Auto-renewal buried in the fine print |
| 8 | Critical values | Who contacts me if a result is dangerous, and how fast? | No clear answer |
Lab quality comes first: accreditation and assay methods
1. CLIA certification and CAP accreditation
In the United States, the Clinical Laboratory Improvement Amendments (CLIA) set the legal floor. As the CMS CLIA program overview explains, the Centers for Medicare & Medicaid Services regulates laboratory testing on human specimens, and labs that report results used to assess health must hold CLIA certification. If a lab is not CLIA certified, stop there.
CAP accreditation is a step above. Through the College of American Pathologists Laboratory Accreditation Program, labs volunteer for peer inspections by practicing laboratory professionals against detailed checklists. CAP is one of the accrediting organizations CMS recognizes under CLIA, so a CAP-accredited lab meets CLIA requirements and then some.
Many services send samples to national reference labs such as Quest Diagnostics or Labcorp. Others use smaller regional labs. Either can be fine, but you should be able to get the lab's name and check its status yourself.
Also ask how your blood is collected. A venous draw at a lab or by a mobile phlebotomist is the standard for most panels. Self-collected finger-prick samples can work for some markers, but collection technique and shipping conditions can affect results. The FDA's overview of direct-to-consumer tests is a useful reminder that a test you order yourself still has limits, and it encourages you to discuss results with a health care provider.
2. Assay quality: the method matters as much as the marker
Two labs can both report "testosterone" and use very different methods. Here is where it matters most:
- Testosterone. Standard immunoassays are fast and widely used, but they are less accurate at low concentrations. LC-MS/MS (liquid chromatography with tandem mass spectrometry) is more accurate at the low end, which matters for women and for anyone tracking small changes. For free testosterone, ask whether it is calculated from total testosterone, SHBG and albumin, or measured by equilibrium dialysis. Direct analog free testosterone tests are generally considered less reliable.
- Estradiol. Routine estradiol tests are built for the higher levels seen in premenopausal women. Men and postmenopausal women usually have low levels, so a sensitive estradiol test, often run by LC-MS/MS, is the better choice. If you are a man on testosterone therapy and your clinician is managing estradiol, this is not optional.
- ApoB. Each LDL, VLDL and Lp(a) particle carries one ApoB molecule, so ApoB reflects the number of particles that can enter artery walls. Ask whether ApoB is measured directly with a standardized assay at a major lab, rather than relying only on a calculated LDL.
If a company cannot tell you which method it uses, you cannot judge how much to trust the number.
3. Clinician review: who reads your results, and who can you call
A lab report is data. A clinician turns it into a decision. Ask:
- Is the reviewer a licensed physician or other licensed clinician?
- Do you get a live conversation, or only a written or AI-generated summary?
- Can that clinician act on the results, by prescribing, adjusting treatment or referring you?
- If you have a question three weeks later, who answers it?
An automated dashboard can be a nice extra, but it is not a review. At BioCure Health, every result is interpreted with a specialist in a 1:1 review, and that same physician-led team can build and adjust a protocol if you need one. You can meet the clinicians on our team page.
Your data: raw results and trend tracking
4. Data access
You should be able to download the original lab report as a PDF, with the lab's name, collection date and time, units and reference ranges. That is the document your primary care physician, endocrinologist or cardiologist will want to see. Some platforms display their own "optimal ranges". That can be helpful context, but the lab's own reference range should be visible too.
5. Retest frequency and trend tracking
One result is a snapshot. Hormones and many other markers shift with time of day, fasting, sleep, recent exercise and illness. Testosterone, for example, is usually drawn in the morning because levels run higher early in the day.
Trends are only meaningful when conditions match: same lab, same assay, similar time of day, similar preparation. Ask whether the service charts your results over time and keeps your draws consistent. Retest timing should fit your situation. Someone starting hormone therapy usually needs follow-up labs sooner than someone setting a yearly baseline.
Privacy, pricing and cancellations
6. Privacy and HIPAA status
HIPAA applies to health care providers, health plans and their business associates. A consumer wellness company that sits outside that circle may not be covered by HIPAA at all, in which case its own privacy policy is what protects you. Ask whether the company is a HIPAA covered entity, whether it sells or shares your data, whether it uses de-identified data for research, and how to delete your account. BioCure Health is HIPAA compliant.
7. Pricing transparency and cancellations
Providers price in very different ways, and prices change often, so check each company's current pricing page before you buy. Compare the structure:
| Pricing model | How pricing works | Example | What to check |
|---|---|---|---|
| Annual membership | One yearly fee for a set panel | Function Health | Which markers cost extra, how retesting and renewal work |
| Panel plans | Choose a panel tier, one time or recurring | InsideTracker | Whether clinician review is included |
| Per test or per kit | Buy individual tests or kits | Labcorp OnDemand, Everlywell | Who orders the test and who discusses results with you |
| Consultation plus protocol | Physician consult, labs, then an optional treatment membership | BioCure Health | What the membership includes |
At BioCure, the physician video consultation is $199 and can be credited back with a membership. Specialty tests have published prices, for example micronutrient testing at $585 and TrueAge epigenetic testing at $625. Membership pricing depends on your protocol and is set at your consultation. We do not bill insurance directly, but many patients use HSA or FSA funds, and we provide invoices for reimbursement.
Whatever you choose, read the cancellation terms, ask what happens if you miss a draw, and confirm whether follow-up tests are included.
8. What happens if a critical value is found
A critical value is a result far enough outside the normal range that it may need prompt action, such as a dangerously high potassium or very low glucose. Accredited labs have procedures to report critical values urgently to whoever ordered the test. The real question is what happens next. In some consumer models, an independent physician you have never spoken to orders the test on your behalf. Ask who will contact you, how quickly, whether that covers nights and weekends, and whether they will direct you to urgent care if needed. If you ever get that call, act on it, and get emergency care if you have symptoms.
Where BioCure fits, and when another provider may suit you better
BioCure Health is a physician-led telehealth longevity clinic based in the Fort Lauderdale area and licensed to treat patients in 47 states, with availability confirmed at intake. Our comprehensive Male and Female panels cover hormones, thyroid, lipids, metabolic and organ markers, and the site describes a 90+ biomarker panel. Blood is collected by an in-home phlebotomist or at a lab, results arrive in 7 to 14 days, and a specialist reviews every result with you. You can ask your clinician which lab and which assays are used for your panel.
We are a strong fit if you want hormone-focused testing with a real clinician, plus the option to move into treatment, such as hormone optimization, peptide therapy or medical weight loss, with the same team, in person or by video.
Another option may suit you better if you need insurance billing (your primary care physician or a local endocrinologist), want a single inexpensive test (a per-test service), or want a data dashboard with no interest in treatment (a membership platform). If you prefer a local endocrinology or functional medicine practice, whether in Montgomery, Alabama or anywhere else, the same eight questions apply.
Frequently asked questions
Is Function Health or InsideTracker better?
Neither is automatically better; it depends on what you want. Function Health sells an annual membership built around a broad panel, while InsideTracker sells panel plans paired with lifestyle recommendations. Run both through the eight criteria, especially which lab is used, which assays, and whether a clinician will actually talk with you.
How do I check if a lab is CLIA certified or CAP accredited?
Ask the testing company for the name of the lab that runs your samples. CMS offers a public CLIA laboratory search, and CAP lists its accredited laboratories on its website. If the company will not name its lab, treat that as a red flag.
Are at-home blood test kits accurate?
It depends on how the sample is collected and which lab runs it. A venous draw by a mobile phlebotomist is processed the same way as a draw at a lab. Self-collected finger-prick samples can work for some markers, but technique and shipping conditions can affect results.
Do biomarker testing companies take insurance?
Many direct-to-consumer and longevity services are cash pay. BioCure Health does not bill insurance directly, but many patients use HSA or FSA funds, and BioCure provides invoices and documentation for reimbursement.
How often should I retest my biomarkers?
There is no single schedule. People starting hormone therapy or another treatment usually retest sooner than people establishing a yearly baseline. Your clinician should set the timing, and you should use the same lab and similar draw conditions each time.
Does BioCure Health offer comprehensive hormone testing?
Yes. BioCure offers comprehensive Male and Female panels covering hormones, thyroid, lipids, metabolic and organ markers, with an in-home phlebotomist or in-lab draw. Results arrive in 7 to 14 days, and a specialist reviews every result with you.
The best biomarker testing company is not the one with the longest list. It is the one with an accredited lab, the right methods, a clinician who knows your name, and a plan for what comes next. Longevity is not accidental, it is intentional, and it starts with numbers you can trust.
Let BioCure Health lead you in the right direction. Call or text us to schedule an introductory call at 754-206-0838. Your future self will thank you.