CD4 T淋巴细胞计数（绝对值）
本检测用于测量您血液中CD4细胞的数量，CD4细胞是一种白细胞。CD4细胞可以帮助身体对抗感染，对维持正常的免疫功能具有重要作用。
["\""]
关键信息一览
- LOINC
- 44056-0
- 简码
- CD4NAIVEBM
- 别名
- CD4+CD45RA+CD45RB+CD45RC+ Cells # Mar
- 类别
- 生化
- 样本
- serum
- 采血管
- EDTA (lavender-top) or heparin (green-top) sterile tube for bone marrow aspirate collected into anticoagulant medium. ACD (yellow-top) tube is acceptable as an alternative anticoagulant. Specimens must be maintained at room temperature (18-22°C) and processed within established stability windows. For serum, plain red-top or serum separator tube (SST) may be used per laboratory protocol.
- 单位
- N/A
- 参考下限
- 4.2
- 参考上限
- 5.9
- 危急值范围
- 2 N/A – 7 N/A
- 是否空腹
- 否
- 适用人群
- 成人
- 性别
- all
- 年龄范围
- 0–120 岁
- 检测方法
- Flow cytometry using multiparameter immunophenotyping with fluorochrome-conjugated monoclonal antibodies against CD4, CD45RA, CD45RB, and CD45RO (or CD45RC) surface markers, followed by absolute count determination using counting beads or volumetric analysis on a bone marrow aspirate specimen.
- CPT
- 86359 (T cells, total count); 86360 (T cells, absolute CD4 count); additional CPT codes may apply for comprehensive immunophenotyping panel including CD45RA, CD45RB, CD45RO/CD45RC subsets such as 88184, 88185 (flow cytometry interpretation), and 86356 (mononuclear cell antigen quantitation)
- SNOMED
- 443742003 |Bone marrow specimen|; 365632008 |Count of cells|; 116859006 |T-helper cell|; 25239000 |CD4-positive helper T lymphocyte|; 303852008 |Naive T lymphocyte|
- 标本量
- Minimum 1-2 mL of bone marrow aspirate collected into sterile anticoagulant-containing transport medium. First-pull aspirate is preferred for immunophenotyping to minimize hemodilution. For serum: minimum 1-2 mL whole blood yielding adequate serum for ancillary testing.
- 标本稳定性
- Bone marrow aspirate specimens must be processed within 24-48 hours of collection when maintained at room temperature (18-22°C). Do not refrigerate or freeze bone marrow specimens intended for flow cytometry, as cold exposure may cause cell clumping, loss of viability, and altered surface marker expression. Specimens older than 48 hours may yield unreliable results due to cell death and antigen degradation.
- 溶血上限
- 500
- 脂血上限
- 1000
- 黄疸上限
- 500
- 报告时间
- 24–72 小时
- 医嘱频率
- routine
为什么这项检测很重要
CD4细胞是免疫系统的重要组成部分，能够帮助身体抵御病毒、细菌和真菌等感染。CD4计数偏低可能提示免疫功能减弱，从而增加罹患严重感染或疾病的风险，尤其是当您感染HIV或患有其他影响免疫系统的疾病时，风险更为明显。
检测前须知
这项检测无需特殊准备。医护人员会将一根细针刺入您的手臂或手背以抽取血液，整个过程通常只需几分钟。如果您正在服用抗凝药物（血液稀释剂）或有出血问题病史，请在检测前告知您的医疗保健提供者。
检测结果说明
检测结果通常以每微升血液中的CD4细胞数量（cells/µL）表示。虽然各实验室的参考范围略有差异，但计数偏低可能提示免疫抑制，可能与HIV或其他免疫性疾病有关。您的医生会结合您的整体健康状况和病史来解读检测结果。
CD4计数偏低的常见原因
CD4计数偏低可能由感染（如HIV）、某些药物（例如部分化疗药物）、自身免疫性疾病、营养不良或慢性疾病引起。如果您出现原因不明的感染、疲劳或体重下降，请与您的医疗保健提供者讨论您的检测结果。
Reference range
Adult males: 4.2-5.9; Females: 3.8-5.1 x 10^12/LN/A
No special patient preparation required for serum specimen collection. For bone marrow aspirate evaluation, patient consent for the procedure must be obtained. Recent corticosteroid therapy, chemotherapy, radiation, immunosuppressive agents, or bone marrow-stimulating factors (e.g., G-CSF) may affect results and should be documented. Discontinue heparin therapy prior to bone marrow aspiration when possible to minimize clotting of aspirate.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
"
简称
"
常见问题
CD4计数偏低对我的健康意味着什么？
我应该多久进行一次这项检测？
我可以做些什么来维持CD4细胞数量吗？
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17日. · 阅读我们的编辑政策