With regard to detection, current protocols using NBC detection equipment (such as M-8 paper or the ICAM) will not indicate a "positive" when samples containing botulinum toxin are tested. To confirm a diagnosis of botulinum toxin poisoning, therapeutically or to provide evidence in death investigations, botulinum toxin may be quantitated by immunoassay of human biological fluids; serum levels of 12–24 mouse LD50 units per milliliter have been detected in poisoned patients.
Dr. Engelman says preventative is legit. “Most certainly! I do micro-injections on patients who are just starting to show the finest expression lines in order to prevent them from ever making the wrinkle." NYC-based board-certified plastic surgeon Norman Rowe, MD, is also a fan. "While Botox has a fundamental use in treating wrinkles that are already formed, it has a role in the prophylactic, or prevention, of wrinkles. So, don't think that you don't need Botox because you don't have wrinkles. If you want to keep that smooth skin, start with Botox before they form."
Charges can vary from $8 to $20 a unit depending on where you are in the country and the level of dilution, meaning that the price may actually be higher than the quoted price if a clinic dilutes it out instead of preparing full-strength Botox. The cost of the procedure varies as it depends upon the total number of units injected and the number of sites treated.