B细胞CD19和CD38免疫表型分析(流式细胞术)——外周血
这项检查检测血液中表达CD19和CD38标志物的B细胞是否存在及其比例,通常用于评估免疫细胞群体或评估影响B细胞的疾病。
["这项检查帮助医生了解您免疫系统中B细胞的功能状态,从而指导血液疾病或免疫相关疾病的治疗。"]
关键信息一览
- LOINC
- 59147-9
- 简码
- CD19CD38
- 别名
- CD19+CD38+ Cells # Bld
- 类别
- 生化
- 样本
- whole-blood
- 采血管
- EDTA (lavender/purple-top) vacutainer tube; alternatively, sodium heparin (green-top) tube is acceptable for flow cytometry applications. ACD (yellow-top) tubes may also be used. Tubes must be filled to stated volume to maintain proper anticoagulant ratio.
- 单位
- N/A
- 是否空腹
- 否
- 适用人群
- 成人
- 性别
- all
- 年龄范围
- 18–65 岁
- 检测方法
- Flow cytometry using fluorescently labeled monoclonal antibodies against CD19 and CD38 surface markers, typically performed on whole blood with erythrocyte lysis prior to acquisition on a clinical flow cytometer. CD19 identifies pan-B lymphocytes; CD38 expression characterizes activated B cells, plasmablasts, and plasma cell precursors.
- CPT
- 86356 (Mononuclear cell antigen, quantitative, not otherwise specified); additional 86359 (T cells, total count) and 86360 (T cells, absolute CD4 and CD8 count) may apply depending on full panel ordered
- SNOMED
- 399009007 (B lymphocyte count); 40640006 (CD19 antigen); 119376003 (CD38 antigen)
- 标本量
- 3-5 mL of whole blood in EDTA; minimum 1 mL for pediatric or limited samples. Peripheral blood draw via standard venipuncture.
- 标本稳定性
- Specimen should be processed within 24-48 hours of collection when stored at room temperature (18-25°C). Refrigeration (2-8°C) may extend viability up to 72 hours, but prolonged storage may alter surface marker expression and cell viability. Do not freeze whole blood specimens.
- 溶血上限
- 0
- 脂血上限
- 0
- 黄疸上限
- 0
- 报告时间
- 4–72 小时
- 医嘱频率
- routine
为什么要做这项检查
医生可能会安排这项检查来诊断或监测白血病、淋巴瘤或其他血液疾病。它还可以帮助在化疗或免疫治疗期间跟踪免疫反应。有时,它也用于检查自身免疫性疾病或感染患者是否存在异常的B细胞活动。
检查前需要做什么准备
无需特殊准备。医护人员会用一根细针插入静脉(通常在手肘部位)抽取少量血液。整个过程大约需要5分钟,您可能会感到短暂的刺痛。如果您感到紧张,请告诉医生或护士。
检查过程中会发生什么
血液样本会通过流式细胞术进行分析,这是一种根据细胞表面标志物(包括CD19和CD38)来分离和识别不同细胞类型的技术。这有助于确定您血液中B细胞的数量和比例。
结果意味着什么
结果会显示表达这些标志物的B细胞百分比。水平异常可能提示B细胞白血病、淋巴瘤或其他免疫系统问题。医生会结合您的病史和症状来解读结果。
Reference range
Reference ranges are laboratory-specific and vary by age and clinical context. In healthy adults, CD19+CD38+ B cells typically represent a subset of total CD19+ B lymphocytes. Absolute counts vary by instrumentation and antibody clones used; consult your laboratory's reference interval.N/A
No fasting required. Patients should be adequately hydrated. Avoid recent live vaccinations or immunosuppressive therapy prior to draw when clinically feasible, as these may transiently alter lymphocyte subset populations. Inform the laboratory of any current immunosuppressive or immunomodulatory medications (e.g., rituximab, corticosteroids).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
简称
B细胞标志物分析
常见问题
CD19/CD38+ B细胞水平偏高或偏低意味着什么?
我需要多久做一次这项检查?
检查前可以进食或饮水吗?
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。
如果您认为自己可能出现医疗紧急情况,请立即拨打当地急救电话或前往最近的急诊科。
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