B淋巴细胞CD19和CD27标志物流式细胞术分析(外周血)
该检测用于测量B淋巴细胞(一种白细胞)表面的特定蛋白标志物(CD19和CD27),这些细胞是免疫系统的重要组成部分。它有助于评估这些细胞在您血液中的成熟程度和数量。
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关键信息一览
- LOINC
- 43273-2
- 简码
- CD19CD27IgD
- 别名
- CD19+CD27+IgD+ Cells NFr Bld/T
- 类别
- 生化
- 样本
- whole-blood
- 采血管
- Heparinized (sodium or lithium heparin) or EDTA anticoagulated tube. ACD-A tubes are also acceptable. Use sterile, endotoxin-free tubes specifically validated for flow cytometry immunophenotyping.
- 单位
- N/A
- 参考下限
- 5
- 参考上限
- 15
- 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 CD19 (pan-B cell marker), CD27 (memory B cell marker), and IgD (naive B cell marker), followed by multiparameter analysis to identify CD19+CD27+IgD+ non-switched memory B cells. Whole blood is stained with fluorochrome-conjugated antibodies, red blood cells are lysed, and cells are acquired on a flow cytometer.
- CPT
- 86356 (Mononuclear cell antigen enumeration by flow cytometry; each additional marker - commonly applied for multi-marker panels)
- SNOMED
- 395125005 |Measurement of B lymphocyte subset (procedure)|; 269476004 |B lymphocytes - CD19 positive cells measurement (procedure)|
- 标本量
- 3-5 mL of whole blood for adults; minimum 1 mL for pediatric patients. Peripheral blood samples should be collected in anticoagulant tubes and maintained at room temperature (18-25°C).
- 标本稳定性
- Specimen should be processed within 24-30 hours of collection when stored at room temperature (18-25°C). Do not refrigerate or freeze whole blood samples as this may affect cell viability and surface marker expression. Samples older than 48 hours are generally considered unacceptable.
- 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
为什么需要进行这项检测
如果您出现疲劳、体重减轻或淋巴结肿大等症状,或正在接受血液相关疾病的评估,医生可能会安排这项检测。它也可用于监测某些癌症或免疫系统疾病的治疗进展。
检测前需要注意什么
无需特殊准备。医护人员会将一根细针刺入您的静脉(通常在手臂处),并将血液抽取到试管中。整个过程大约需要5分钟。
检测结果的含义
该检测评估CD19/CD27阳性B淋巴细胞的比例和活性。异常结果可能提示免疫系统问题、感染或某些癌症。医生会结合您的病史与您讨论检测结果。
常见监测的疾病
这项检测常用于诊断或追踪慢性淋巴细胞白血病(CLL)、非霍奇金淋巴瘤或影响B淋巴细胞的自身免疫性疾病等病症。
Reference range
Reference ranges vary by laboratory and age. In healthy adults, CD19+CD27+IgD+ non-switched memory B cells typically represent approximately 5-15% of total CD19+ B lymphocytes. Absolute counts are generally 8-50 cells/μL. Pediatric values differ; consult age-specific reference intervals provided by the performing laboratory.N/A
No special patient preparation is required. Fasting is not necessary. Patients should inform the laboratory of any recent immunomodulatory therapy (e.g., rituximab, corticosteroids, chemotherapy) or immunosuppressive medications that may affect lymphocyte subsets. Avoid strenuous exercise immediately before collection.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
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简称
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常见问题
“阳性”或“异常”结果意味着什么?
我需要多久做一次这项检测?
检测前我可以进食或饮水吗?
本信息仅供教育用途,不能替代专业医疗建议、诊断或治疗。
本内容仅供一般信息和教育用途,不能替代专业医疗建议、诊断或治疗。对于任何医疗问题,请务必咨询合格的医疗服务提供者;切勿因阅读本站内容而忽视专业医疗建议或推迟就医。
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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