Blood Drug Testing

Does anyone know why I would need to have a full blood count test repeated in 2 weeks?

I've just been diagnosed with arthritis (I have the bone growths in my joints) and now the doctor is trying to find out what type. I had lots of blood tests yesterday (including the rheumatoid factor, enthrocryte sedimentation, c-reactive protein etc). The doctor's called today to say they had some of the results back and I need to have another full blood count done in two weeks time. Why is this? I'm 25.

Public Comments

1. Maybe your white blood cell count is high, and 2 weeks would be sufficient time to do a comparison test.
2. Talking to your doctor would probably be the best source of information. That said, they could be making sure that any unusual levels or results are consistent, and not the result of a temporary aggravating factor. Things such as a very active day or a cold could cause some tests to read a different way, but if they get consistent results they can be more sure that the tests are pointing towards the same diagnosis. I hope they can give you some answers.
3. Usually doctors do this in order to see if there are changes in someone's blood. This can be a gauge if a patient's health state is improving. This often happens here in the Philippines when the patient is diagnosed with Dengue Fever. I strongly suggest that you ask your doctors why they want you to have another blood exam. I always tell people that they should not be afraid to ask their doctors about procedures, medications, etc.
4. Hi, Sorry to hear about your condition. Mostly likely your physician is trying to rule out any false positive results from initial test or determine effectiveness of a new med you were prescribed. Would suggest the CRP test is most important for you to know if you have RA. Other challenges could include PsA (psoriatic arthritis) or just plain old fashion osteo arthritis. Either way, there are numerous treatments for RA including MTX and/or the biologics. If your diagnosis is RA, don't postpone treatment, but insure you are seeing a rhuematologist for primary diagnosis. Good luck!