37. Johnson, JR, Burnell-Nugent, M, Lossignol, D, Ganae-Motan, ED, Potts, R, Fallon, MT. Multicenter, double-blind, randomized, placebo-controlled, parallel-group study of the efficacy, safety, and tolerability of THC:CBD extract and THC extract in patients with intractable cancer-related pain. J Pain Symptom Manage. 2010 Feb;39(2):167-79. PMID: 19896326
To be clear, there is no one specific test, scan, or anything else of the sort that you can do to determine whether or not you need CBD oil for pain. Also, since cannabis is not yet recognized by the FDA, you unfortunately can’t really go to your doctor either and have them recommend it; until marijuana is FDA-approved, it cannot be prescribed by physicians.

Even though high-strength CBD oils are more expensive than lower concentrates, they work out to be more cost-effective and longer-lasting because you’ll need fewer drops to obtain the same effect. For example, a single drop of Love Hemp’s 40% CBD oil contains 20mg of CBD, that is 4 times more than a 10% tincture, which provides just 5mg per drop. If you’re looking to take a high dose, stronger concentrates will also make it easier to achieve your desired dose (fewer drops to count!).
‘In the 1940s and early 1950s, further studies showed inactivation of diverse bacteria, influenza virus, and Penicillium chrysogenum (previously P. notatum) mold fungus using various glycols, principally propylene glycol and triethylene glycol.[6] In principle, these chemical substances are ideal air disinfectants because they have both high lethality to microorganisms and low mammalian toxicity.’
Take a look at our CBD oil dosage chart recommendation to determine what’s the best dose for your situation. Generally speaking, take 1 to 6 mg of CBD Oil for every 10 lbs of your body. If you are between 100 and 175 lbs, 6 to 8 mg may be right for mild pain, 18 to 24 mg for medium pain and 32 to 60 mg for severe pain. Remember, start on the lower side, and go up gradually overtime. 
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