Which medical certificate should I get?

[Nina]

I am 31 years old and 9 classes away from getting my BA in Criminal Justice, but keep failing statistics, which is a requirement. I don't want to keep wasting time and money on this class. I just want to start working already! People keep saying it is easy to get a job in the medical field, even with just a certificate and there are a lot of people with 4 year social science degrees who can't find work. Would I be better off getting a certificate in the medical field that would take about nine months to obtain.

Which certificate is more in demand and will I likely be able to find a well paying job faster in the Maryland/DC area?

CNA
Phlebotomy Technician (drawing blood)
X-Ray Technician
Pharmacy Technician
Dialysis Technician

Or another area of study I haven't listed.

Or are certificates a waste of time and money?

Thanks.