血清/血浆中CD27和CD19 B细胞免疫球蛋白(Ig)亚类定量检测
此项检测测量血液中特定抗体(免疫球蛋白)和免疫细胞标记物(CD27和CD19)的水平,有助于评估免疫功能、抗体反应以及可能的免疫缺陷或疾病。
["此项检测评估免疫系统抗体生产和免疫细胞活动的关键组成部分。"]
关键信息一览
- LOINC
- 89358-6
- 简码
- CD27/CD19
- 别名
- CD27 Cells/Cells.CD19 NFr Bld
- 类别
- 生化
- 样本
- whole-blood
- 采血管
- EDTA (lavender-top) or ACD (yellow-top) anticoagulant tube; sodium heparin (green-top) tube is also acceptable for flow cytometry. Heparinized whole blood preferred when same-day processing is performed.
- 单位
- N/A
- 参考下限
- 20
- 参考上限
- 50
- 是否空腹
- 否
- 适用人群
- 成人
- 性别
- all
- 年龄范围
- 0–99 岁
- 检测方法
- Flow cytometry using fluorescently labeled monoclonal antibodies against CD27 and CD19 surface markers; results expressed as percentage of B lymphocytes (CD19+) co-expressing CD27
- CPT
- 86356 (Monoclonal antibody flow cytometry, each cell surface marker); additional markers may be billed separately. Common panel billing includes 86355/86356/86357/86359/86360.
- SNOMED
- 399247001 | Lymphocyte subset analysis (procedure); 408380003 | CD19+ B cell count (procedure)
- 标本量
- 3-5 mL of whole blood for adults; minimum 1 mL for pediatric patients. Adequate sample volume is required to obtain sufficient events for reliable lymphocyte subset enumeration.
- 标本稳定性
- Specimen should be processed within 24-30 hours of collection when stored at room temperature (18-25°C). Refrigeration (2-8°C) is not recommended for optimal lymphocyte viability. If processing is delayed beyond 24 hours, viability and marker expression may be compromised.
- 溶血上限
- 0
- 脂血上限
- 0
- 黄疸上限
- 0
- 报告时间
- 24–72 小时
- 医嘱频率
- routine
测试内容是什么?
该检测包括两部分:测量B细胞(白细胞的一种)上的CD27和CD19标记物,以及血清或血浆中IgG亚类(IgG1、IgG2、IgG3、IgG4)的定量。CD27和CD19是参与免疫细胞发育和功能的蛋白,而IgG亚类是保护身体免受感染的抗体类型。
可能需要进行此项检测的原因是什么?
医生可能会建议进行此检测,以评估免疫功能、诊断慢性感染、自身免疫性疾病或免疫缺陷,或监测影响B细胞或抗体生产的疾病治疗效果。
如何进行此项检测?
从手臂静脉抽取血样,然后将血液处理分离出血清或血浆,通过先进实验室技术分析CD27/CD19标记物和IgG亚类含量。
测试结果的含义是什么?
结果可能显示CD27/CD19标记物或IgG亚类水平异常,表明免疫系统失衡、抗体生产减少或其他潜在健康问题。医生会结合您的医疗史和症状进行结果解释。
Reference range
Reference values vary by laboratory and age. CD27 expression on CD19+ B cells is used to distinguish memory B cells (CD27+) from naive B cells (CD27-). Adult reference range for CD27+ memory B cells as a percentage of total CD19+ B cells is approximately 20-50%. Absolute counts should be interpreted with concurrent lymphocyte and CD19+ B cell counts.N/A
No special patient preparation required. Fasting is not necessary. Recent vaccinations (especially within 4-6 weeks), acute infections, or immunosuppressive therapy may affect results and should be noted on the requisition. Specimen should be collected prior to administration of immunomodulatory agents when possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
临床意义:此项检测对于诊断和管理如低抗体血症(IgG水平降低)、自身免疫性疾病(如系统性红斑狼疮)、慢性感染(如HIV)或监测化疗或生物制剂治疗免疫反应至关重要。异常结果可能需要进一步检测或调整治疗方案。
简称
IgG亚类及免疫细胞标记物检测
常见问题
我为什么需要做这项检测?
我的检测结果意味着什么?
我需要定期进行此项检测吗?
本信息仅供教育用途,不能替代专业医疗建议、诊断或治疗。
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医学审核:WellAlly 编辑团队 最后审核 2026年8月16日. · 阅读我们的编辑政策