September 2019

CBD Examine purchased 65 popular CBD oil products and sent them to an independent, ISO 17025 certified laboratory to test each one for cannabinoid levels. We published all of those test results on this site as product reviews. In this industry report, we summarize our findings.

Contents of this report

Key Findings


Of the 65 products we tested, 31 received an A score for accuracy, having cannabinoid levels within 10% of their product claims. Nine products we tested got D’s and F’s for having cannabinoid levels that were more than 30% off from what their labels’ claimed. Read more about the accuracy ratings below in the Accuracy Ratings section of this report.

THC found in some “THC-free” CBD products

We found four “THC-free” CBD products that tested positive for THC: Elixinol, Sol CBD, Joy Organics, and Mission Farms.

Amazon, CBD, and THC

We tested eight CBD products sold on All eight contained CBD and six also contained THC. One of Amazon’s most popular CBD products, R+R Medicinals, contained a whopping 63 mg of THC. Amazon claims to prohibit CBD and THC products. However, a search for “CBD” on Amazon displays over 10,000 products and they even have a page for their top “CBD Oils.”

Don’t trust the COA

A Certificate of Analysis (COA) is a third-party test that “proves” a CBD product contains the amount of cannabinoids claimed on its label. Our testing found COAs provided by manufacturers completely unreliable. We found that the majority of mislabeled products (inaccurate by 30%+) came with a COA from the manufacturer. For example, our lab results found 69.13% fewer mg of CBD than the COA provided by Hemp Bombs. Joy Organics came with a COA that claimed zero THC, while our testing found THC in their product.

A link found in popular CBD brands for epilepsy

Charlotte’s Web, Palmetto Harmony, and Haleigh’s Hope are popular CBD brands for treating epilepsy. All three brands contained substantial amounts of the cannabinoids CBC and CBG, which research shows may be partially responsible for reducing seizures.

Accuracy Ratings

Accuracy scores are based on the difference between the product’s label and the amount of cannabinoids or CBD found in the product. We base calculations on total cannabinoid levels for labels that are not specific. For example, a product that has a label with “500 mg” is calculated as total cannabinoids. A product label that specifies “500 mg CBD” will receive an accuracy score based on CBD levels.

Accuracy scores

A 0-10% off Our test results found that the CBD or cannabinoid levels were within 10% of the product’s label.
 B 10-20% off Our test results found that the CBD or cannabinoid levels were within 20% of the product’s label.
 C 20-30% off Our test results found that the CBD or cannabinoid levels were within 30% of the product’s label. For reference, the California Bureau of Cannabis Control (BCC) requires medical marijuana products to test within 30% of cannabinoids suggested by their label. However, hemp products are not regulated.
 D 30-40% off Our test results found that the CBD or cannabinoid levels were within 40% of the product’s label.
 F More than 40% off Our test results found CBD or cannabinoid levels 40% off or more.

Products with “A” Accuracy Rating


Products with “B” Accuracy Rating

Products with “C” Accuracy Rating

Products with “D” Accuracy Rating

Products with “F” Accuracy Rating

At a Glance

Product Percent difference from label Accuracy Rating Cost per mg CBD Value score CBD
4Corners Cannabis Oral Tincture 100 mg 13.1% B $ 0.318 Pricey
American Hemp Oil 500 mg Pure CBD Hemp Oil 12.5% B $ 0.107 Good deal
ananda hemp Full Spectrum 300 CBD Oil Premium Hemp Extract 12.6% B $ 0.192 Fair deal
Barlean’s Extra Strength Ideal CBD Hemp Oil 1.5 oz 7.1% A $ 0.058 Best value
Bluebird Botanicals Hemp Classic 6X 15.0% B $ 0.088 Good deal
Bluebird Botanicals Hemp Classic CBD Oil 2.0% A $ 0.112 Good deal
Bluebird Botanicals Hemp Complete 6X 16.9% B $ 0.182 Fair deal
Bluebird Botanicals THC-Free CBD Oil 8.9% A $ 0.055 Best value
CBD American Shaman CBD & Terpene Rich Hemp Oil Tincture 150 mg Natural (0.3%THC) -29.2% C $ 0.347 Pricey
CBD American Shaman CBD & Terpene Rich Hemp Oil Tincture 150 mg Natural (NO THC) -6.1% A $ 0.249 Pricey
CBD for Life Phytocannabinoid Rich Hemp Tincture Non-Flavored 300 mg -10.6% B $ 0.150 Fair deal
CBD fx CBD Tincture Oil 500 mg 19.1% B $ 0.126 Good deal
CBDISTILLERY Full Spectrum CBD Oil Tincture 500 mg 30 ml 31.5% D $ 0.063 Best value
cbdMD CBD Oil Tincture Drops 30 ml Natural 300 mg -2.8% A $ 0.103 Good deal
CBDPure Hemp Oil 100 7.1% A $ 0.280 Pricey
Charlotte’s Web Extra Strength Hemp Extract Oil (Now: 17 mg Cannabinoids / 1 ml) -19.3% B $ 0.123 Good deal
Charlotte’s Web Full Strength Hemp Extract Oil (Now: 7 mg Cannabinoids / 1 ml) -20.4% C $ 0.177 Fair deal
Diamond CBD Full Spectrum MCT Oil – 100 mg (30 ml) 21.0% C $ 0.331 Pricey
Elixinol CBD Tincture Hemp Oil Drops 300 mg CBD Natural Flavor -12.6% B $ 0.114 Good deal
Endoca CBD Oil 300 mg 3% CBD 4.2% A $ 0.099 Good deal
Fab CBD CBD Oil Natural 150 mg -0.2% A $ 0.286 Pricey
Gaia Herbs Hemp 10 mg/ml -0.6% A $ 0.169 Fair deal
Green Roads CBD Oil – 250 mg 1.0% A $ 0.182 Fair deal
Haleigh’s Hope Starter Haleigh’s Hope® 20:1 with Safflower 1.3% A $ 0.107 Good deal
Healthworx 500 mg Full Spectrum CBD Oil 57.8% F $ 0.044 Best value
Hemp Bombs CBD Oil 300 mg (Peppermint) -64.4% F $ 0.469 Pricey
Hemplucid Hemplucid Tincture MCT 250 mg -11.8% B $ 0.181 Fair deal
Highland Pharms Highland Pharms 250 mg CBD Hemp Oil – 1 oz -19.3% B $ 0.198 Fair deal
Infinite CBD Nano Enhancer 900 mg 7.2% A $ 0.052 Best value
IrieCBD Pain 250 mg CBD Oil Tincture 12.5% B $ 0.157 Fair deal
Isodiol RapidCBD Pure Natural Hemp Oil Tincture 500 mg 9.6% A $ 0.073 Best value
Joy Organics CBD Oil Tinctures 250 mg -5.2% A $ 0.147 Good deal
Kat’s Naturals Balance 15 ml 750 mg CBD -35.6% D $ 0.298 Pricey
Koi CBD Koi Naturals Natural 250 mg -25.2% C $ 0.218 Pricey
Kushly Natural CBD Oil 300 mg -11.8% B $ 0.209 Fair deal
Lazarus Naturals High Potency CBD Tincture Full Spectrum 750 mg 5.8% A $ 0.040 Best value
Made by Hemp Tasty Hemp Oil Tasty Drops CBD Oil Tincture Full Spectrum 300 mg CBD -34.0% D $ 0.253 Pricey
Mary’s Nutritionals Remedy Oil 500 mg -13.4% B $ 0.194 Fair deal
Medterra Medoil CBD Tincture 500 mg 12.8% B $ 0.080 Best value
Mission Farms Relax CBD Oil 1000 mg Citrus Cream -3.2% A $ 0.102 Good deal
NanoLabs Nano Powered Hemp Extract 300 mg Vanilla -9.1% A $ 0.125 Good deal
Nature’s Script CBD Oil 300 mg -61.9% F $ 0.306 Pricey
Naturefine Flavored Hemp Oil – 1000 mg – Orange Creamsicle -96.9% F $ 0.940 Pricey
nganic CBD Oil Original 250 mg -2.2% A $ 0.200 Fair deal
NuLeaf Naturals 240 mg Full Spectrum CBD Oil High Grade Hemp Extract (50 mg/ml) 5.6% A $ 0.152 Fair deal
Palmetto Harmony Palmetto Harmony (30 ml) 600 mg -6.8% A $ 0.162 Fair deal
PlusCBD Oil CBD Oil Drops 1 oz -9.9% A $ 0.186 Fair deal
Populum Full-Spectrum Hemp CBD Oil 250 mg 10.7% B $ 0.246 Pricey
Premium Jane Natural CBD Oil (Full Spectrum) 300 mg -11.5% B $ 0.207 Fair deal
Pure Spectrum Hemp Oil Tincture (500 mg) 6.8% A $ 0.103 Good deal
PureKana Natural CBD Oil (Full Spectrum) 300 mg 4.6% A $ 0.185 Fair deal
R + R Medicinals Hemp Extract Fresh Peppermint 1000 mg 21.5% C $ 0.042 Best value
RE Botanicals Hemp 15 mg Classic Tincture 11.9% B $ 0.109 Good deal
Real Scientific Hemp (Medical Marijuana) RSHO Blue Label 1 oz CBD Oil Tincture (100 mg CBD) 0.3% A $ 0.289 Pricey
Receptra™ Active CBD Oil 250 mg Fresh Berry 1.2% A $ 0.109 Good deal
Restorative Botanicals High Strength Hemp Oil 400 mg Mint Chocolate 8.5% A $ 0.047 Best value
Rosebud CBD CBD Oil 350 mg 35.1% D $ 0.134 Good deal
Select CBD CBD Drops Peppermint 1000 mg -4.3% A $ 0.068 Best value
Sol CBD Natural Tincture 300 mg CBD -11.2% B $ 0.244 Pricey
Sunday Scaries CBD Tincture 500 mg 2.0% A $ 0.147 Good deal
Sunsoil (formerly Green Mountain CBD) CBD OIL – Unflavored – 600 mg CBD Sunsoil Full Spectrum CBD -0.3% A $ 0.050 Best value
Try The CBD Full Spectrum 500 mg CBD Tincture 18.2% B $ 0.059 Best value
Verified CBD CBD Oil 500 mg (1.7%) 1oz Natural Flavor 5.1% A $ 0.084 Best value
Welief 600 mg Peppermint Hemp CBD Full Spectrum Oil Tincture 0.4% A $ 0.050 Best value
Wise Help Hemp Oil Drops 3000 mg -99.9% F $ 91.361

Value Score – CBD

Value rating Cost per mg CBD
Best value $0.087 or less
Good deal $0.088 to $0.149
Fair deal $0.150 to $0.211
Pricey more than $0.211


Value Scores above are based on cost per of mg of CBD on the product that we purchased and tested. Note that many products come in larger discounted sizes, which we describe in each review. Remember to look at the “accuracy” score and read about the “good” and “bad” of each CBD company before making a purchasing decision.

About CBD Examine is consumer advocacy group that shows consumers what’s inside their CBD products. All 65 product reviews are available for free at Products tested included some of the most popular brands according to Google ranking, market research reports, CBD review websites, or top rated brands sold on We are not affiliated with any of the CBD companies reviewed. (Update 2020: at the time of this 2019 report, we had no affiliations. In July of 2020, we started using affiliate links to support our independent lab testing.)

Learn more: About CBD Examine | Our Review Process

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