Can you determine whether i have cervical cancer or other reproductive organ cancer with a simple blood test?

Not really: There are some tumor markers for female reproductive organ cancers but none of them are adequate to serve as the sole means of screening women. A regular pelvic examination that includes a pap smear is a critical component of catching cervical cancer early.

Gyn cancer: No gyn cancer other than gestational trophoblastic disease can be diagnosed by a blood test.