Clearly Hormonal

Spit Happens: The Truth About Cortisol Testing


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Picture three women. One is spitting into four little tubes throughout the day, mailing them off to a lab, hoping to finally get answers about her "adrenal fatigue." Another has been on a steroid inhaler for years, or just got a cortisone shot in her knee, and has never once had her adrenal glands checked — even though statistically, she has roughly a coin-flip's odds of an abnormal result if anyone bothered to look. And a third, in her late forties, is being told her exhaustion and brain fog are adrenal fatigue, when what she actually needs is a conversation about perimenopause.

Same hormone. Same small gland sitting on top of each kidney. Three completely different ways we get this wrong — and in this episode, Dr. Patil-Sisodia untangles all three.

She starts with the myth: why multi-sample "adrenal fatigue" saliva and urine kits run on real, legitimate lab technology in service of a diagnosis that doesn't medically exist — and why that combination is exactly what makes them so convincing. Then comes the plot twist she didn't expect to be making: that same multi-sample saliva format is actually a gold-standard tool, just for something else entirely — screening for Cushing's syndrome, when cortisol runs too high instead of too low. From there, she walks through the tests that genuinely work for Cushing's, the pseudo-Cushing's patterns (depression, alcohol use, obesity, PCOS/PMOS, illness, and more) that can mimic it on paper, and the condition she says gets missed more than any other: steroid-related adrenal insufficiency, which affects about half of long-term steroid users — inhalers, creams, sprays, and injections included — while fewer than 1% are ever tested for it.

The episode closes on something close to home for this show's listeners: how easily perimenopause gets relabeled as adrenal fatigue, what that mislabeling actually costs women, and three simple questions you can run any cortisol test through before you trust it.


Time Stamps:

[00:00]  Medicine Gets Cortisol Wrong — the three-part setup: wrong tests, wrong people, and the people who need testing but never get it.

[01:07]  Adrenal Fatigue Myth — why multi-sample saliva/urine kits use real lab technology to chase a diagnosis with no recognized normal range.

[03:08]  Real Use for Saliva — the plot twist: late-night saliva testing is legitimate gold-standard science, just for a different question.

[06:19]  Cushing Syndrome Basics — the three tests that actually work: late-night saliva, 24-hour urine cortisol, and overnight dexamethasone suppression.

[07:34]  Pseudo Cushing Pitfalls — how depression, heavy alcohol use, obesity, poorly controlled diabetes, PCOS/PMOS, illness, pain, eating disorders, and intense exercise can mimic Cushing's without being it.

[09:19]  Steroid Induced Adrenal Suppression — the condition affecting roughly half of long-term steroid users (inhalers, creams, sprays, injections, possibly Depo-Provera) while under 1% get tested.

[12:57]  Menopause Misdiagnosed — why perimenopause symptoms get scooped up under the adrenal fatigue umbrella, and what the research does and doesn't show.

[17:06]  Testing Adrenal Insufficiency — the real diagnostic pathway: tapering first, the 8–9 a.m. blood draw, and how to read the result range.

[18:55]  Cosyntropin Test Myths — the standard 250-microgram test versus the unvalidated low-dose version some sources still promote.

[21:06]  Recovery and Reassurance — why an abnormal cortisol number is far more common than a true adrenal crisis, and why recovery can take months to over a year.

[22:21]  Three Questions for Testing — what to ask before trusting any cortisol test: proven diagnosis, meaningful timing, gold-standard validation.

[24:19]  Final Takeaways and Outro.


Key Takeaways

  • "Adrenal fatigue" and "chronic stress" are not recognized medical diagnoses — there is no validated normal range for the multi-sample panels marketed to diagnose them.
  • The same multi-sample saliva testing format is legitimate gold-standard science — when it's used correctly, at the right time of night, repeated 2–3 nights, to screen for Cushing's syndrome.
  • About half of people on long-term steroids (any form — pills, inhalers, creams, sprays, injections) have some degree of adrenal insufficiency. Fewer than 1% are ever tested.
  • Perimenopause symptoms (fatigue, brain fog, anxiety, low libido) overlap heavily with the symptoms marketed as "adrenal fatigue" — and that overlap can delay real menopause care.
  • Before trusting a cortisol test: ask what it's proven to diagnose, whether the timing matches the question, and whether it's been validated against the gold standard.


Resources & Links

  • Follow Dr. Patil-Sisodia: @drpatilsisodia on Instagram and TikTok
  • Send fan mail / episode questions via Buzzsprout
  • Catch up on the related myth-busting episode referenced in this one (adrenal fatigue supplements)

Thanks for listening. Find more info about Clearly Hormonal on the website or Instagram.

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Clearly HormonalBy Komal Patil-Sisodia, MD

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