Hello curtiswayne8 and thanks for posting, 

I am sorry to learn that you are having tests and are due to see a haematologist tomorrow. Inevitably, waiting to find out if anything is the matter is unnerving and I can understand you having questions. 

A number of different tests can be done on a blood sample, I am not sure exactly what your GP asked for, but it sounds like in your situtaion they can't be sure that everything is ok otherwise you wouldn't need the CT scan and haematology referral as well.  But having said that normal blood tests are still a good thing. Making a diagnosis is a bit like doing a jigsaw and different bits with various results and findings have to be joined up to get the whole picture. When one or another blood tests isn't normal it might point to an active disease process in the body, but I don't think normal tests can always rule cancer out however I expect each specific context has a bearing on this.

Try and stand back and let the doctors do their thing, they need to check you out properly which is in many ways reassuring even though the process is unsettling. There is no way to find out any more at the moment, and I can't second guess what will happen tomorrow, but hopefully the haematologist will be in a position to explain the CT results, tell you what they think and if anything else needs to be done. Don't be shy of asking questions if they mention something you don't understand. I hope it goes well. 

Try not to overthink it for now and take things one step at a time. 

Best wishes, 

Julia