Adrenal Cortisol Test Kit

It's a simple at-home saliva collection — no needles, no lab visit. Everything ships to your door; you collect four small samples at the marked times across a single day and send them back in the prepaid mailer. Your samples are analyzed by our CLIA-certified partner lab, and your results come back in an easy-to-read report.

In your bloodstream, most cortisol is bound to carrier proteins and biologically inactive. A blood test measures all of it at once, so most of what it reports is hormone your cells can't use. Saliva captures only the free, active cortisol — the fraction your tissues actually draw on. The blood draw itself can also spike cortisol from the needle and clinic stress, inflating the number you came to measure. Collecting at home, on a normal day, gives you your real levels under real conditions.

It measures your cortisol — the body's main stress hormone — four times across a single day: morning, noon, afternoon, and before bed. Cortisol follows a natural daily rhythm, so measuring it at four points maps the shape of your curve rather than capturing a single isolated reading. Together, those four samples show whether your cortisol is high, low, or dysregulated at the wrong times of day.

A healthy cortisol curve is highest in the morning and tapers to its lowest at night. When that pattern breaks down, the way it breaks down is the signal — and it's rarely as simple as "too much" or "too little." Many people sit in the messy middle: cortisol that spikes at night, is flat in the morning, or is dysregulated at the wrong times. That pattern — often described as adrenal stress — is tied to abdominal weight gain, fatigue, brain fog, broken sleep, and that "wired but tired" feeling. A single reading can't catch it; four points across the day can.

It can be. When a thyroid medication dose isn't optimized — too low or too high — it can act as a low-grade stressor, and for some people that shows up as a disrupted cortisol pattern. Your cortisol curve won't tell you what to do about your medication, but it gives you and your provider one more real data point to bring to that conversation.

Upload them into the HypoHero app's Labs section and you'll see them against the empirical range — the tighter window where people actually tend to feel their best — so a result that reads "in range" on paper but falls outside that window gets flagged. From there you can track your labs alongside your daily temperature patterns and symptoms, both logged four times a day just like your cortisol, and the Hero AI reads your full history to help you spot patterns and connections across everything you've tracked. A single test is one piece; tracked together with your temperature and symptoms over time, it's how you see what's really going on — and track your progress as you work to fix it.

A lab report alone can't detect a Thyroid Deficit — the state where your cells aren't getting enough minerals to produce the thyroid hormone your body needs, which can be true even when your numbers read "in range." The picture comes together in the app. Upload your results into the Labs section and you'll see them against the empirical range — the tighter window where people actually tend to feel their best — so a result that reads "in range" on paper but falls outside that window gets flagged. Then track your labs alongside your daily temperature patterns and symptoms, both logged four times a day just like your cortisol, and the Hero AI reads your full history to help you spot the patterns and connections across everything you've tracked. A single test is one piece. Tracked together with your temperature and symptoms over time, it's how you see what's really going on — and track your progress as you work to fix it.

No. Chronically high or low cortisol can point to medical conditions like Cushing's or Addison's, but those are diagnosed and managed by a physician. This test is for understanding your cortisol pattern, not for diagnosis — if a medical condition is suspected, that's a conversation for your doctor.

Once the lab receives your samples, results are typically ready in 10-14 business days and delivered securely through email.

These states have stricter rules for at-home lab testing — like requiring a physician's order or in-state lab licensing — that this kit doesn't currently meet. We've chosen not to sell there rather than offer a test we can't properly fulfill. If you're in one of these states, your healthcare provider can help you order similar testing locally.