Objective By analyzing the results of antinuclear antibody spectrum(ANAs)which antinuclear antibody (ANA)were negative,to explore the correlation between them and make clinical assessment of the risks of disease. Methods Make a statistics of the results of serum ANAs cases which ANA were negative and clinical data of 6003 dif-ferent patients came from outpatient and?inpatient from 2011 until May 15,2014.The relationship among the results and their clinical significance were analyzed.Results Of 6003 ANA negative specimens,the positive rate of ANAs was 10.9%,the negative rate of ANAs was 89.1%,the positive rate of anti-SSA antibody was the first (3.9%),the posi-tive rate of anti-Ro-52 antibody was the second(3.6%).Of ANAs positive specimens,the weakly positive rate of anti-Sm,anti-SSB,anti-Scl-70 and anti-His antibodies were higher than the positive of them,the positive rate of anti-Ro-52 antibody was higher than the weakly positive,there were all with statistical significance (P <0.05).The total positive rate of single event’s antibody was the highest(8.7%).Of the weakly positive cases and positive cases of single event’ s antibody,the positive cases of two events’s antibody,the cases of one weak positive and the other positive of mixed e-vents’s antibody,the female positive rate was higher than the male and there was with statistical significance(P <0.05).In the different age group of ≤20 years old,21-49 years old and ≥50 years old,there was statistical significance of ANAs positive rate(6.2%,9.5% 12.6%,χ2 = 21.23,P < 0.05).Of 652 ANAs positive specimens,patients diag-nosed as autoimmune disease(AID)were 104 cases(16.0%).The positive antibodies of ANAs positive specimens were 162 cases,the positive rate of anti-Ro-52 antibody in the AID group was the first (30.9%),the positive rate of anti-SSA antibody was the second(28.4%).Of 5351 ANAs negative specimens,patients diagnosed as AID were 322 cases(6. 0%).The AID patients in ANAs positive specimens were higher than those in ANAs negative specimens,the non-AID patients in ANAs positive specimens were lower than those in ANAs negative specimens,there were both with statistical significance (P<0.05).Conclusion Both ANA and ANAs are inspected regularly,can effectively prevent missed diagnosis and misdiagnosis, provide important clinical value for disease diagnosis,treatment and evaluation of prognosis.%目的：通过对抗核抗体（antinuclear antibody，ANA）阴性病例的抗核抗体谱（antinuclear antibody spec-trum，ANAs）检测结果的分析，探讨两者之间的关联并进行临床疾病风险的评估。方法对2011年至2014年5月15日6003例门诊和住院不同患者血清 ANA 阴性病例的 ANAs 检测结果和临床资料进行统计，分析其结果之间的相互关系及其临床意义。结果6003例 ANA 阴性标本中，ANAs 阳性占10．9％，ANAs 阴性占89．1％；抗 SSA 抗体阳性率最高（3．9％），抗 Ro-52阳性率次之（3．6％）。ANAs 阳性标本中，抗 Sm、抗 SSB、抗 Scl-70、抗 His 抗体弱阳性率均高于阳性率，抗 Ro-52抗体阳性率高于弱阳性率，差异均有统计学意义（P ＜0．05）；单项抗体总阳性率最高（8.7％）；单项抗体弱阳性和阳性病例、二项联合抗体阳性病例、混合联合抗体中一阳一弱病例中，女的阳性率均高于男的，差异有统计学意义（P ＜0．05）。不同年龄组 ANAs 阳性患者的阳性率差异也有统计学意义（≤20岁组6．2％、21-49岁组9．5％、≥50岁组12．6％，χ2＝21．23，P ＜0．05）。652例 ANAs 阳性患者中，自身免疫性疾病（autoimmune disease，AID）患者104例（16．0％）。ANAs 阳性患者中阳性抗体在 AID 的总数为162例，抗 RO-52抗体在 AID 患者阳性率最高（30．9％），其次为抗 SSA 抗体（28．4％）。5351例 ANAs 阴性患者中，AID 患者322例（6．0％）。AID 患者在 ANAs 阳性标本中所占的比例高于在 ANAs 阴性标本的，非 AID 组在 ANAs 阳性标本中所占的比例低于在ANAs 阴性标本的，差异均有统计学意义（P ＜0．05）。结论ANA 和 ANAs 两者联合定期的检测，可以有效防止漏诊和误诊，为疾病诊断、治疗及预后评估提供重要的临床价值。
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