Read a COA in 2 minutes · 2026

Lab Test Results & COA Certificates

A Certificate of Analysis is the single most important document in the hemp market — it’s how you know what’s actually in your gummy. Here’s how to read one in two minutes.

We may earn a commission from qualifying purchases through links on this page, at no extra cost to you. Outbound retailer links are marked sponsored. This does not influence our rankings.

The document

What a COA is, and why it matters

A Certificate of Analysis (COA) is a lab report from an independent, third-party testing facility. It confirms what a product contains and screens for contaminants. In a market where label claims aren’t always accurate, a current, batch-matched COA is the only reliable proof of what you’re buying.

The checklist

The six things to read on every COA

  • 1. Cannabinoid potency. Confirms Δ9 (and CBD/CBN) milligrams match the label and stay within 0.3% by dry weight.
  • 2. Pesticides. Should read “pass” or below action limits.
  • 3. Heavy metals. Lead, arsenic, cadmium, mercury — all should pass.
  • 4. Residual solvents. Leftovers from extraction; should be within safe limits.
  • 5. Microbials. Mold, yeast, and bacteria screening.
  • 6. Batch & date match. The COA’s batch number and date should match the product in hand.
Batch matching is the catch

A COA for a different batch tells you little. Match the batch/lot number on the package to the COA. No batch match, no proof.

Lab-tested picks

Gummies With Published Lab Testing

Hemp-derived gummies that publish lab results and carry verified Judge.me reviews.

Our highest-rated pick is also the most reviewed gummy in the lineup — a full-spectrum nighttime formula built around a CBD-forward 4:2:1 blend.

1Tillman's Tranquils THC Sleep Gummies
Best ReviewedTillman's Tranquils

THC Sleep Gummies

★★★★★★★★★★4.5 · 384 reviewsVerified · Judge.me
Blend4:2:1 CBD:CBN:THC
Per gummy20mg CBD · 10mg CBN · 5mg THC
FlavorCherry
FormatFull spectrum · Vegan · Gluten-free
$29.99 / pouch

Pros

  • Most-reviewed formula on the site (verified Judge.me)
  • Low 5 mg Δ9 THC per gummy — easy to titrate
  • Full-spectrum with CBD + CBN
  • Vegan & gluten-free

Cons

  • Single cherry flavor
  • Nighttime-leaning, not a daytime pick
Check price →

With 20 mg CBD and 10 mg CBN alongside 5 mg of hemp-derived Δ9 THC, this is a gentle, well-balanced entry point. The low THC-per-piece makes it simple to start with half a gummy and adjust.

The indica-leaning gummy is one of the most-reviewed evening picks, built for a heavier, relaxed profile.

2Tillman's Tranquils Indica Gummies - Wedding Cake
Best EveningTillman's Tranquils

Indica Gummies - Wedding Cake

★★★★★★★★★★4.6 · 229 reviewsVerified · Judge.me
ProfileIndica
StrainWedding Cake
Per gummy12mg Delta-9 THC
FormatVegan · Gluten-free
$29.99 / pouch

Pros

  • 229 verified reviews
  • Indica-style relaxed profile
  • Hemp-derived Δ9 THC
  • Vegan & gluten-free

Cons

  • Evening-leaning, not for daytime
  • Higher potency — titrate
Check price →

An end-of-day option with a deep review base. The relaxed, body-leaning character makes it a popular wind-down choice.

A green-apple CBD:THC blend at an accessible $25, with the catalog’s joint-highest star rating.

3Tillman's Tranquils Green Apple 2:1 CBD:THC
Best CBD:THCTillman's Tranquils

Green Apple 2:1 CBD:THC

★★★★★★★★★★4.8 · 40 reviewsVerified · Judge.me
Blend2:1 CBD:THC
Per gummy10mg CBD · 5mg THC
FlavorGreen Apple
FormatVegan
$25.00 / pouch

Pros

  • 4.8★ verified rating
  • Accessible $25 price
  • CBD:THC balanced blend
  • Green apple flavor

Cons

  • Smaller review base (40)
  • One flavor
Check price →

A well-rated, value-friendly CBD:THC option — a solid balanced pick for readers watching price.

Editorial standards

Reviewed by our experts

Every guide is fact-checked by our in-house reviewers against published lab reports and peer-reviewed research.

SM
Sarah Mitchell, RD, CNS
Lead Reviewer & Registered Dietitian

10+ years in clinical nutrition, MSc Nutrition. Oversees ingredient accuracy, clinical dosing and quality of evidence across every guide.

JR
James Rodriguez, CPT, CSCS
Sports & Fitness Reviewer

Specialist in creatine, protein, pre-workout and electrolytes with 7 years in performance nutrition. Reviews dose, format and active-use claims.

EK
Emily Kang
Beauty & Wellness Editor

Covers beauty, collagen, hair growth and skin. Cosmetology background, 5 years editorial. Field-tests products over a full 30-day window.

Last reviewed June 2026 · How we test & verify

FAQ

Frequently Asked Questions

What is a COA?
A Certificate of Analysis is an independent lab report verifying a product’s cannabinoid content and screening for pesticides, heavy metals, solvents, and microbials.
How do I find a product’s COA?
Reputable brands link COAs on the product page or print a QR/batch code on the package that leads to the report. If you can’t find one, treat that as a red flag.
What should the THC reading say?
For a federally compliant hemp product, the COA should show Δ9 within 0.3% by dry weight, with per-serving milligrams matching the label.
Why does batch matching matter?
Each production batch is tested separately. A COA only proves anything if its batch/lot number and date match the product you actually have.

Keep reading

Related Guides