当直接抗球蛋白试验因仅补充剂而呈阳性时,酸化的实用性
1American Red Cross Missouri-Arkansas Region, Maryland Heights Immunohematology Reference Laboratory, Maryland Heights, MO.
Immunohematology
|July 9, 2025
概括
从直接抗球蛋白测试 (DAT) 带有补充剂 (C3) 的阳性红细胞 (RBC) 中的酸解离可以产生显著的发现. 需要指导方针来优化临床相关结果的化性能.
科学领域:
- 免疫血液学 免疫血液学
- 输血医学 输血医学
- 血清学 血清学是一门学科.
背景情况:
- 酸溶解从红细胞 (RBC) 表面恢复IgG抗体.
- 直接抗球蛋白试验 (DAT) 仅对补充剂 (C3) 呈阳性,通常会产生负的化物.
- 临床上有意义的信息可以从C3-only DAT阳性样本的解离得到.
研究的目的:
- 为了确定从C3-only DAT阳性样本的解离中获得临床相关信息的频率.
- 帮助制定指导方针,用于对这些样本进行测量.
- 为了减少信息不丰富的化程序.
主要方法:
- 仅在11.5个月内对患者样本DAT阳性C3的回顾性分析.
- 收集并分析了化物结果,血清结果,输血史和患者诊断.
- 确定了1171个C3-only DAT阳性样本;321个 (27%) 经过了化.
主要成果:
- 非反应性化物是最常见的.
- 在19个 (6%) 化物中发现了抗体.
- 在71个 (22%) 的化物中发现了泛质化/自身抗体.
- 在30.9%的病例中发生了信息性化物 (抗体或化物特异性自身抗体).
结论:
- 从C3-only DAT阳性样本的化物可以提供临床上有意义的发现.
- 建议考虑输血史,血液溶解指标和并发血清自身抗体的指导方针.
- 实施指导方针可以优化化性能,减少无信息性测试.
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