Life Extension offers this Chemistry Panel & Complete Blood Count Test Kit for $19.95 with free shipping. That's a $27 savings and the lowest total price we could find. Once you receive the kit, you can take it to a participating lab to have your blood drawn. The results of the test can either be viewed online or sent to you via email, post, or fax. Click here for more information. (For a comprehensive list of what this test checks for, click here.)