对随机选择的胃肠病往院患者检测血清脂质结合唾液酸（ＬＳＡ）含量及活动性结核标志物（ＡＴＭ）。结果显示：癌症组４４例、结核组２７例和其它病组１０５例血清ＬＳＡ含量分别为１５８±５２，１５４±４９，９３±２３ｍｇ／Ｌ；３组ＬＳＡ阳性率依次为８６４％，７４１％，１０５％。癌症组与结核组差异无显著性（Ｐ＞００５），该两组与其它病组差异有高度显著性（Ｐ＜０００１）。上述３组ＡＴＭ阳性率依次为１５０％，８１５％和１５２％，结核组显著高于另两组（Ｐ＜０００１）。结果表明血清ＬＳＡ，含量与ＡＴＭ联合检测对胃肠癌症与腹腔结核病诊断和鉴别诊断有应用价值。 Serum lipid-associated sialic acid (LSA) levels and active tuberculosis markers (ATM) were measured in randomly selected gastrointestinal patients. The results showed that the serum LSA levels in 44 patients in the cancer group, 27 in the tuberculosis group, and 105 in other disease groups were 158±52, 154±49, 93±23 mg/L; the positive rate of LSA in the three groups was 86.4%,74 1%, 105%. There was no significant difference between the cancer group and the tuberculosis group (P>005). The difference between the two groups and other disease groups was highly significant (P<0001). The positive rates of the above three ATM groups were 150%, 815%, and 15.2%, respectively. The tuberculosis group was significantly higher than the other two groups (P<0001). The results showed that serum LSA, combined with ATM, has application value in the diagnosis and differential diagnosis of gastrointestinal cancer and celiac tuberculosis.