Do i have to get some blood tests before doing a cervical spine ct with dye?

Maybe: Usually patients get a blood test for renal function (creatinine) before contrast (dye) administration, as contrast can damage the kidneys. Younger patients without history of kidney disease often are not tested ahead of time.

Check kidney functio: If you habe reason to blieve you have marginal kidney function it is best to avoid this test if your kidneys are bad.