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Built on a simple belief: premium cannabis should come with proof. Every product. Every batch. Every time.
Magnum Opus Cannabis Co. was built from the ground up with one goal: make premium, lab-tested THCA products accessible to everyone who deserves them.
We work directly with a select group of licensed cultivators in California and Oregon β two states with the most rigorous cannabis standards in the world. Every partner we choose shares our obsession with quality: clean grows, proper technique, honest potency.
We don't take shortcuts. We don't sell products we haven't verified. And we don't list a potency number that hasn't been confirmed by an independent lab.
"Magnum Opus" β a master work. That's the standard we hold ourselves to on every product that leaves our hands.
Every product is independently lab-tested before it ever appears on our site. Potency, purity, safety β all verified.
We partner exclusively with licensed cultivators in California and Oregon β the gold standard in cannabis agriculture.
Your orders ship in plain, discreet packaging. Most customers receive within 3β7 business days from our fulfillment center.
What's on the label is what's in the package. We don't exaggerate potency numbers or use misleading product descriptions.
We don't just say our products are safe and potent β we pay independent, accredited laboratories to verify it. Every batch, every product, no exceptions.
Full cannabinoid panel including THCA, Delta-9 THC, CBD, CBG, CBN, and more. We verify both total THCA content and Delta-9 THC compliance (<0.3% per dry weight as required by the 2018 Farm Bill).
Complete terpene profile testing to confirm the aromatic compounds that define each strain's character β myrcene, limonene, caryophyllene, linalool, and more. What the nose tells you, the lab confirms.
Comprehensive pesticide panel covering 60+ compounds including organophosphates, pyrethroids, carbamates, and chlorinated pesticides. Our standard: zero detectable pesticide residue. Period.
For all concentrates and extract-based products, we test for residual solvents including butane, propane, ethanol, and other processing chemicals. All results must pass state-equivalent limits.
E. coli, Salmonella, total aerobic plate count, yeast, mold, and other microbial contaminants are tested and must pass below threshold levels. No product ships with a failed microbial test.
Arsenic, cadmium, lead, and mercury testing on all products. Cannabis is a bioaccumulator β it absorbs what's in the soil. We verify the grow environment produces safe, clean material.
Contact us with any product name and we'll provide the current COA from our lab partner. We believe full transparency is the minimum standard β not a premium feature.
All orders ship in plain brown boxes or padded mailers with no brand markings, no cannabis imagery, and no indication of contents. Our return address uses a neutral business name.
Orders are processed and handed off to our fulfillment partner within 24β48 hours of payment confirmation. You'll receive a tracking number via email once your package ships.
Most customers receive their orders within 3β7 business days. Exact timing depends on your location and current shipping volume. Expedited shipping available on select orders β ask at checkout.
We currently ship to most US states where hemp-derived THCA products are legal. If you have a question about your specific state, contact us before ordering. We do not ship internationally.
All products ship as hemp-derived THCA under the 2018 Farm Bill with <0.3% Delta-9 THC by dry weight. You are responsible for knowing and complying with your local laws.
If your order arrives damaged, incomplete, or incorrect, contact us within 7 days of delivery. We stand behind every order and will make it right. Evidence (photos) helps us resolve issues fastest.
Questions about your order? Need a COA? Want to talk wholesale? We're here.
magnumopuscannabisco@gmail.com
We respond to all emails within 24 hours.
24 hours or less
MonβSat, 9amβ8pm PT
For order support, please include your order number (starts with MOC-) in your message so we can pull up your details quickly.