Does a normal blood test automatically rule out bone cancer? My mum (85 yrs old) has been in excruciating pain in her right hip for 3 weeks, she's lost 10LB but is eating well. She's had 3 Melanoma's in the right leg in recent years. Morphine doesn't touch the pain at it's worst which is at night. She's had a normal bllood result and hospital is trying to tell us it's sciatica. Doesn't seem right. ....
