What Is Delta-8 THC?

Delta-8 tetrahydrocannabinol. An isomer of Delta-9 THC, differing only in where a double bond sits.

Measured across 50 lab-tested products from 12 independent laboratories · updated September 3, 2026

The chemistry

Delta-8 and Delta-9 are structural isomers: identical atoms, arranged with the double bond on the eighth carbon rather than the ninth. Delta-8 occurs naturally only in trace amounts, so commercial Delta-8 is generally produced by converting CBD.

Why it matters when you are reading a label

Because it is usually a conversion product, the purity question matters more than with plant-expressed cannabinoids. A COA that reports residual solvents and reaction by-products alongside potency is doing more work than one reporting potency alone.

Products highest in Delta-8 THC

Ranked by measured Delta-8 THC content, not by price or popularity. The figure on each card is the one printed on that product’s certificate.

Delta-8 THC 64.371% Koi THC Disposable Vape, Watermelon Skitz, Hybrid - 5g (Live... Tested by ACS Laboratory $64.14 $77.28

Delta-8 THC 64.253% Koi THC Disposable Vape, cherry gelato, Sativa - 5g (Live Re... Tested by ACS Laboratory $64.14 $77.28

Delta-8 THC 63.678% Koi THC Disposable Vape, Blackberry Kush, Indica - 5g (Live... Tested by ACS Laboratory $64.14 $77.28

Delta-8 THC 4.66% Koi Hemp THCA Diamond Infused Lemon Cherry Gelato Pre Rolls... Tested by PharmLabs San Diego $54.77 $65.99

Delta-8 THC 4.51% Koi THCA Pre-Roll, Diamond-Infused - Watermelon Zkittlez (H... Tested by PharmLabs San Diego $54.77 $65.99

Delta-8 THC 4.5% Koi Hemp THC-A Diamond-Infused INDICA Lemon Cherry Gelato Pr... Tested by PharmLabs San Diego $43.90 $62.71

Delta-8 THC 0.117% CBDfx Delta- 9 THC Gummies + CBD: Magic Melon Sativa – High... Tested by CC Testing Labs $40.90 $49.28

Delta-8 THC 0.117% CBDfx Delta-9 THC Gummies + CBD: Magic Melon Sativa – High P... Tested by CC Testing Labs $68.79 $82.88

A product can appear high here and low elsewhere — these are single-cannabinoid rankings, not overall potency.

How to read a Delta-8 THC figure

Percentage is content by weight. Milligrams per serving is the more useful number for edibles and beverages, because it tells you the dose rather than the concentration. Where both appear on a certificate they should reconcile: percentage multiplied by ten gives milligrams per gram.

If a label claims a Delta-8 THC figure the certificate does not support, trust the certificate.

Delta-8 THC compared

Common questions

What is Delta-8 THC?

Delta-8 tetrahydrocannabinol. An isomer of Delta-9 THC, differing only in where a double bond sits.

How is Delta-8 THC formed?

Delta-8 and Delta-9 are structural isomers: identical atoms, arranged with the double bond on the eighth carbon rather than the ninth. Delta-8 occurs naturally only in trace amounts, so commercial Delta-8 is generally produced by converting CBD.

How much Delta-8 THC is in a typical hemp product?

Across 50 lab-tested products in this catalogue, Delta-8 THC ranged from 0.001% to 64.371%, averaging 4.134%. Those results come from 12 independent laboratories. Product form drives most of that spread.

How do I verify the Delta-8 THC content of a product?

Read the certificate of analysis and match its batch number to the packaging. A certificate that cannot be tied to the batch in your hand does not describe the product you bought.

Chemistry and measured content only. No health outcome is claimed or implied, and nothing here is medical advice.