Personally, I have had the worst luck recently. Screened at pharma medica, ppd, covance, and world wide within a 4 week period and didn't get one. Lots of gas, and road food, some decent fun however, zero income.
Yikes that does sound rough, I hope things turn around for you. Did any of them tell you why? Did you at least end up being an alternate for any of them?
Last Edit: Sept 6, 2016 22:22:12 GMT -5 by puntkicker
I haven't had any issues getting into PPD studies regularly. It has a lot to do with your health also. Most people I see denied for not meeting the screening requirement aren't the healthiest anyway and just looking to make a quick buck. I have no issue except the occasional backup slot which still gets you card for guaranteed entry on next study of choice. If you want to do it and are actually a healthy volunteer you can make it happen.