Suggest Treatment For Tightness,pain And Stiffness Of Muscle

I am looking for information about autoimmune serology blood tests. I have had a panel done, but am not sure what these tests are for. ie autoab rnp, autoab smith, autoab ssb, etc. How can I find out what these labs were looking for? I am 54, have a spotless medical history. Have been experiencing muscle tightness and pain, stiffness. I want to understand why