The global autoimmune disease testing market size was valued at USD 5.08 billion in 2022 and is projected to grow from USD 5.56 billion in 2023 to USD 11.29 billion by 2030, exhibiting a CAGR of 10.7% during the forecast period. North America dominated the autoimmune disease testing market with a 44.09% share in 2022, driven by advanced diagnostic infrastructure, high awareness levels, and rising prevalence of autoimmune disorders in the region.