MR Portable Daignostic is revolutionizing home healthcare by providing essential diagnostic services at your doorstep. Whether it's a digital X-ray, ECG, or sample collection for blood or urine tests, this service ensures that you get top-quality medical care without stepping foot outside your home. The RA factor test is a blood test that checks for something called rheumatoid factor (RA factor) in your blood. Rheumatoid factor is a protein made by your immune system. In some people, especially those with rheumatoid arthritis, the immune system makes this protein by mistake, and it can attack healthy joints. Doctors use this test to help figure out if you might have rheumatoid arthritis or another autoimmune disease. If your RA factor is high, it might mean you have rheumatoid arthritis or another condition like lupus or Sjögren's syndrome. But some healthy people can also have a positive result. If your RA factor is normal or low, you might not have rheumatoid arthritis—but it's not a perfect test. Some people with rheumatoid arthritis still test negative. The RA factor test helps doctors find out if your immune system is acting up, especially in conditions that cause joint pain and swelling.