“Your healthcare provider will take your medical history and give you a physical exam. Tests may also be done. These include BLOOD TESTS:

First checking Blood Lab Tests like-1-Antinuclear antibody (ANA) test. This checks antibody levels in the blood, 2-Complete blood count (CBC). This checks if your white blood cell, red blood cell, and platelet levels are normal, 3-Creatinine This test checks for kidney disease,4-Sedimentation rate(ESR) This test can find inflammation, 5-Hematocrit. This test measures the number of red blood cells, in particular the solids in your blood strean versus the fluid in the bloodstream.,6-RF (rheumatoid factor) and CCP (cyclic citrullinated peptide) antibody tests. These can help diagnose rheumatoid arthritis. They can also assess how severe the disease is.,7-White blood cell count. This checks the level of white blood cells in your blood, elevated infection., and 8-Uric acid. This helps diagnose gout (it would be elevated).

Other tests may be done, such as:Joint aspiration (arthrocentesis). A small sample of synovial fluid is taken from a joint. It’s tested to see if crystals, bacteria, or viruses are present.X-rays or other imaging tests. These can tell how damaged a joint is.Urine test. This checks for protein and different kinds of blood cells.HLA tissue typing. This looks for genetic markers of ankylosing spondylitis.Skin biopsy. Tiny tissue samples are removed and checked under a microscope. This test helps to diagnose a type of arthritis that involves the skin, such as lupus or psoriatic arthritis.Muscle biopsy. Tiny tissue samples are removed and checked under a microscope. This test helps to diagnose conditions that affect muscles.”.

John Hopkins Hospital (https://www.hopkinsmedicine.org/health/conditions-and-diseases/arthritis)