类风湿性关节炎(RA)的早期和不典型者确诊比较困难,本文试图通过测定IgG、IgA、IgM,以观察其在关节炎的鉴别诊断及RA疗效观察方面的实用价值。资料及方法1980年3月～1981年9月,我们收治RA 12例(按美国风湿病协会诊断标准),其中男3例,女9例;年龄25～74岁,病程为1～15年。全部病例的手、足关节已有不同程度的爪状畸形,其中2例合并双侧膝关节积液,各例均长期或间断服用肾上腺皮质激素。 Rheumatoid arthritis (RA) of the early and atypical diagnosis is more difficult, this paper attempts to determine IgG, IgA, IgM, in order to observe its differential diagnosis of arthritis and RA practical value. Materials and Methods From March 1980 to September 1981, we received RA 12 cases (according to the American Rheumatism Association diagnostic criteria), including 3 males and 9 females; aged 25 to 74 years old, duration of 1 to 15 years. All cases of hand, foot joints have varying degrees of claw deformity, including 2 cases of bilateral knee fluid, in all cases were long-term or intermittent use of adrenal cortex hormones.