Is thyroid test profitable to sell on Amazon United States?

The niche generates $144K/yr across 11 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.4%. Flapen's verdict: Skip it (49/100).

How competitive is the thyroid test niche?

11 brands and 12 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 81% of demand.

What do buyers complain about in thyroid test?

Top complaints mined from reviews: Accuracy-Overall, Blood Sugar Level, Ease Of Use. The return rate is 0.1%.

When does demand for thyroid test peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the thyroid test niche?

Listings span $15.03–$119.40; the average listing price is $51.13 (sweet spot $15–$100). The average incumbent carries 2,185 reviews — the moat a new listing must climb.

thyroid test

Skip it

A concentrated shelf (top 5 take 81% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Great$51.13

avg listing price — sweet spot $15–$100

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Price range

Great$15.03–$119.40

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Good4.5%

search→purchase rate — share of searches ending in a sale

Review moat

Okay2,185.18

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay81%

top-5 brand share — brands hold most of the demand

Market size

Okay$144K

$144K/yr · 63K searches

Growth

Bad-5.4%

90-day search growth — must beat 0% to launch

Competition

Bad81%

top-5 click share — a locked-up shelf

Signals Low Review Barrier High Price Out of Stock

According to Flapen's Amazon United States niche tracking, thyroid test is a $144K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 81% of demand. Verdict: Skip it — 49/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

thyroid test market data

Units sold / yr: 3K–3K; avg 100–250/product
Revenue / yr: $128K–$153K; units × avg price
Conversion rate: 4.5%
Avg BSR: #147
Page quality: 0%
Prime: 91%
Sponsored: 64%
Out of stock: 23.7%
Avg brand age: 62 months
Avg seller age: 182 days

Competition & brand share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

Brands

11 rising

Sellers

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

14%

Choose Health31%
Everlywell26%
SAMKARIM11%
KuweiCheck6%
LRCKINSO6%
Verisana5%
Open — no brand owns it (5 brands, 14%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.4% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top thyroid test search terms

thyroid test kit at home22K/yr -6.0%2.2% conv.
thyroid test11K/yr -45.8%2.0% conv.
full thyroid panel test3K/yr +79.6%0.4% conv.
thyroid test kit6K/yr +83.1%1.4% conv.
thyroid at home test kit3K/yr +126.0%1.0% conv.
thyroid home test kit3K/yr -13.6%0.5% conv.
at home thyroid testing kit3K/yr +49.6%2.3% conv.
thyroid check kit2K/yr -15.0%1.1% conv.
thyroid at home test4K/yr -55.1%0.5% conv.
thyroid testing kit3K/yr -41.7%0.0% conv.

All search terms

Top thyroid 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 11 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Choose Health$92.244.5★79 rev

Everlywell At-Home Thyroid Test Collection Kit for Women and Men Get Accurate Results at Home from a CLIA-Certified Lab Within Days for Ages 18 Plus

Everlywell$118.883.9★413 rev

Thyroid Test kit at Home (2 Test) with Live Support - TSH underactive Thyroid Testing kit - Quick Easy and Reliable at Home Test for Monitoring Thyroid Health

SAMKARIM$20.033.9★37 rev

KuweiCheck Thyroid Home Test kit

KuweiCheck$15.033.5★13 rev

Thyroid Testing kit - at-Home Collection Kit - from Hypothyroidism Expert Doctors-Accurate and Reliable TSH Test kit

LRCKINSO$18.035.0★12 rev

Newest

by launch date

Thyroid Testing Kit - At-Home Collection Kit - Rapid TSH Test Kit - Accurate and Reliable TSH Test - Accurate Results in 1520 Minutes

CEARMIROTH$17.954 rev

3mo ago

Thyroid Test kit at Home (2 Test) with Live Support - TSH underactive Thyroid Testing kit - Quick Easy and Reliable at Home Test for Monitoring Thyroid Health

SAMKARIM$20.0337 rev

10mo ago

Thyroid Testing kit - at-Home Collection Kit - from Hypothyroidism Expert Doctors-Accurate and Reliable TSH Test kit

LRCKINSO$18.0312 rev

11mo ago

KuweiCheck Thyroid Home Test kit

KuweiCheck$15.0313 rev

1y ago

TSH Test Kit at Home Check Thyroid Stimulating Hormone(TSH) Levels and Get Reliable Results in just 15 Minutes.

YUDSIT$18.503 rev

1y ago

What buyers say about thyroid test

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use43%

“Easy to do”

Instructions/User Manual/Troubleshooting16%

“The instructions are clear”

Value For Money8%

“very affordable”

Accuracy-Overall8%

“Easy and accurate”

Health Monitoring5%

“This product has been great for taking my health into my own hands”

Quality-Overall4%

“Decent kit”

Advertised Vs Actual Product3%

“right on mark”

Blood Sugar Level1%

“The Samkarin thyroid test is a pretty well thought out test kit that may be helpful for someone who suspects low thyroid”

Hormonal Balance1%

“Reliable and Fast Thyroid Monitoring at Home”

Locally Manufactured1%

“A U. S. company from Texas owns the brand”

What buyers complain about

Accuracy-Overall10%

“not exact accuracy”

Blood Sugar Level9%

“Unfortunately the blood collection process with this wasn't as easy as it is with glucose monitoring kits”

Ease Of Use7%

“I also had trouble opening the solution vial”

Functionality-Overall7%

“it just doesn't work”

Instructions/User Manual/Troubleshooting6%

“I was careful in following the instructions”

Advertised Vs Actual Product4%

“There are several things I wish I knew before purchasing that were not in the online listing:”

Value For Money3%

“it has always seemed too complicated and expensive”

Assembly/Installation3%

“The hardest part was waiting for it to get delivered”

Pain Relief-Overall3%

“Finger poke was a bit painful”

Color Fading/Discoloration2%

“one faded line for C which indicates negative”

Top return reasons

Advertised Vs Actual Product33%

Functionality-Overall33%

Ease Of Use10%

Accuracy-Overall7%

Ethically/Sustainably Sourced7%

Compatibility-Overall7%

Certifications3%

Common questions

Is thyroid test profitable to sell on Amazon United States?: The niche generates $144K/yr across 11 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.4%. Flapen's verdict: Skip it (49/100).
How competitive is the thyroid test niche?: 11 brands and 12 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 81% of demand.
What do buyers complain about in thyroid test?: Top complaints mined from reviews: Accuracy-Overall, Blood Sugar Level, Ease Of Use. The return rate is 0.1%.
When does demand for thyroid test peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the thyroid test niche?: Listings span $15.03–$119.40; the average listing price is $51.13 (sweet spot $15–$100). The average incumbent carries 2,185 reviews — the moat a new listing must climb.