S. R. is a 42-yr old woman who has been experiencing unexplained weight loss in the last few months. She feels like she is tired all the time and her appetite is not very good. Today she is being seen at the outpatient clinic because joint stiffness in the mornings has become an increasing problem. She has also noticed that her left wrist is especially painful and swollen today, though she doesn’t remember injuring it.

a. What diagnostic tests do you expect the nurse practitioner to order for S. R.? For what purposes?