cortisol test
Skip itWeak search conversion (1.0%) — this niche doesn't clear our bar today.
Returns
Great1.0%return rate — above 5% kills the launch gate
Avg price
Great$77.06avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Market size
Okay$212K$212K/yr · 278K searches
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Price range
Okay$8.61–$237.84cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad5,537.63avg incumbent reviews — the moat a new listing must climb
Competition
Bad73%top-5 click share — a locked-up shelf
Growth
Bad-24.5%90-day search growth — must beat 0% to launch
Conversion
Bad1.0%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, cortisol test is a $212K/yr Amazon United States market (278K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 41/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
cortisol test market data
- Units sold / yr
- 3K–3K
- avg 100–250/product
- Revenue / yr
- $193K–$231K
- units × avg price
- Conversion rate
- 1.0%
- Avg BSR
- #298
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 3.1%
- Avg brand age
- 43 months
- Avg seller age
- 153 days
Competition & brand share
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.Brands
15 rising
Sellers
21
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
73%
Top 20: 100%
Open market
15%
- Verisana21%
- Everlywell20%
- Choose Health19%
- MTHFR16%
- EqualDx6%
- THORNE3%
- Open — no brand owns it (9 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -24.5% search growth over the last 90 days.Peak months: Jan, Feb · busiest ÷ quietest = 1.9×
Top cortisol test search terms
- cortisol test93K/yr
- cortisol test kit at home56K/yr
- at home cortisol testing kit14K/yr
- cortisol level test kit2K/yr
- cortisol saliva testing kit4K/yr
- cortisol level testing kit4K/yr
- at home cortisol test13K/yr
- cortisol test kit13K/yr
- saliva cortisol test kit at home4K/yr
- cortisol tester4K/yr
Top cortisol test products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Home Stress Test Saliva Test Kit for Daily Cortisol Levels 4 Cortisol Levels Throughout the Day CLIA Certified Lab Verisana
Verisana$128.044.6★191 rev
4-in-1 Cortisol & DHEA-S Test | Sleep Test | Stress Test | Adrenal Health & Function Test | Visceral Fat | Cap & CLIA accredited Lab | Not Avail in NY RI
Choose Health$108.834.4★170 rev
Cortisol Stress Test 4 X Day - Comes with Results Interpretation and Live Support by Phone 7 Days A Week - Fast Results - at Home Saliva Collection Kit. Fast Results.
MTHFR$126.814.5★54 rev
Everlywell At-Home Metabolism and Stress Hormone Test Kit - Measures Cortisol and Other Hormones - CLIA-Certified Lab Results Within Days - for Men and Women Ages 18 Plus
Everlywell$87.694.1★865 rev
Everlywell At-Home Womens Health Collection Kit Measures 11 Biomarkers for Hormonal Wellness including Cortisol Progesterone & TSH - CLIA-Certified Lab Results Within Days - for Women Ages 18 Plus
Everlywell$237.843.9★137 rev
Newest
by launch date
EqualDx Cortisol & DHEA-S Test At-Home Cortisol Test for Stress & Adrenal Fatigue | Measure Hormone Ratio for Sleep Balance & Recovery | Clinical-Grade Accuracy | Painless Collection
EqualDx$103.9213 rev
Oxidative Stress Test At Home Urine MDA Test Strip | Free Radical & Antioxidant Marker | Wellness Longevity & Vitality Test | Fast Results in 3 Mins | 25 Self Tests
DIAGNOX HEALTH$15.0333 rev
NutraPep Cortisol Gummies for Women Men - 13-in-1 High Cortisol Reducer with Ashwagandha Magnesium L-theanine Rhodiola Rosea - Daily Cortisol Detox Manager for Stress Focus Support - Vegan Sugar Free
NutraPep$20.21271 rev
StrongVit Cortisol Supplements for Women and Men with Magnesium Ashwagandha & L-Theanine. High Cortisol Reducer Manager Detox Lower and Control. Sleep Support & Stress Relief USA
StrongVit$19.901,639 rev
Vita PLynxera Cortisol Supplement Liquid Drops 17-in-1 Cortisol Detox w. Magnesium Glycinate 400mg Ashwagandha L-Theanine Phosphatidylserine Hormone Balanced for Women Mood Focus Sleep Support
Vita PLynxera$21.291,125 rev
Trending
90-day click momentum
KardiaMobile 1-Lead EKG Monitor Medical-Grade FDA-Cleared Personal Heart Monitor Detects Normal AFib & Arrhythmias 30 Second Results Works with Most Smartphones HSA&FSA Eligible
AliveCor$73.894.4★
Designs for Health Nitric Oxide Test Strips Saliva Test - Results in Just 10 Seconds - Support Athletes Healthy Aging Cardiovascular Health (50 Saliva Test Strips)
Designs for Health$34.924.6★
Everlywell At-Home Womens Health Collection Kit Measures 11 Biomarkers for Hormonal Wellness including Cortisol Progesterone & TSH - CLIA-Certified Lab Results Within Days - for Women Ages 18 Plus
Everlywell$237.843.9★
Everlywell At-Home Metabolism and Stress Hormone Test Kit - Measures Cortisol and Other Hormones - CLIA-Certified Lab Results Within Days - for Men and Women Ages 18 Plus
Everlywell$87.694.1★
KA EX - Cortisol Stress Reducer for Athletes | Post-Workout Recovery Gamechanger | Clinically Tested and Trusted by Thousands of Pro Athletes | Swiss Science I Vegan (3 Pack)
KA EX$8.614.1★
What buyers say about cortisol test
What buyers praise and complain about, mined from review topics.What buyers love
“easy to operate”
“Helps me sleep”
“quality of product seems to be accurate in its readings”
“Stress reliever”
“instructions were clear”
“Works well”
“As advertised”
“Good price”
“Accurate and Easy”
“The gummies taste good”
What buyers complain about
“No results given”
“It did not help me sleep”
“Just very expensive”
“My anxiety has been very bad”
“Too hard to use”
“I must be weird I've been taking these consistently for 2 weeks”
“Deceiving”
“Had terrible side effects”
“Incorrect”
“Compatibility Problems”
Top return reasons
Common questions
- Is cortisol test profitable to sell on Amazon United States?
- The niche generates $212K/yr across 19 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -24.5%. Flapen's verdict: Skip it (41/100).
- How competitive is the cortisol test niche?
- 15 brands and 21 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in cortisol test?
- Top complaints mined from reviews: Functionality-Overall, Sleep Quality, Value For Money. The return rate is 1.0%.
- When does demand for cortisol test peak?
- Demand peaks in Jan–Feb; the busiest month runs 1.9× the quietest.
- What does it cost to enter the cortisol test niche?
- Listings span $8.61–$237.84; the average listing price is $77.06 (sweet spot $15–$100). The average incumbent carries 5,538 reviews — the moat a new listing must climb.