If you are running a business that involved chemicals elements, most probably you will face permanent difficulties to convince the FDA that your products or services are healthy and obey the law. The difficulties get bigger when your business is related with foods and medication. The necessary certificate from the agency will cost you pretty much money, time, and energy.
Fortunately, you can save more of your resources because there are now a lot of licensed Drug Test services. Since all of them have the compulsory license, basically the result and certificates that you will have from them is similar. Hence the next consideration should be the price. Here you should make careful comparisons. All of them claim to offer competitive prices for conducting the necessary test but the best price should be measured not only with the value of the dollar but also the speed of the result presentation, the convenient way to complete the legal aspects, and the necessary documentation.
It is important to have a guarantee from the service provider that the certificate as well as the test result will be approved by the FDA. And this approval should be obtained as immediate as possible so that you can handle the other aspects of your business.