多基因癌症风险评估血液检测
此项检测通过分析您的血液样本中的多个基因，评估遗传性癌症风险。它有助医生识别可能影响您癌症风险的遗传因素，并为个体化治疗提供参考依据。
["检测血液中与癌症风险相关的遗传突变，帮助评估您可能的遗传性癌症风险。"]
关键信息一览
- LOINC
- 73977-1
- 简码
- CANCER MGX
- 别名
- Cancer multigene analysis Bld/T
- 类别
- 生化
- 样本
- whole-blood
- 采血管
- EDTA tube (purple-top, K2-EDTA or K3-EDTA) for peripheral blood; sterile container with normal saline or RNA/DNA preservation solution for fresh tissue; formalin-fixed paraffin-embedded (FFPE) block or unstained slides for archival tissue. A separate EDTA tube is recommended for backup DNA extraction.
- 单位
- N/A
- 危急值范围
- 0.5 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
- molgen
- CPT
- 81432 (Hereditary breast cancer-related disorders genomic sequence analysis panel), 81433 (Hereditary breast cancer-related disorders duplication/deletion analysis panel), 81435 (Hereditary colon cancer disorders genomic sequence analysis panel), 81436 (Hereditary colon cancer disorders duplication/deletion analysis panel), 81437 (Hereditary neuroendocrine tumor disorders), 81438 (Hereditary neuroendocrine tumor disorders duplication/deletion), 81479 (Unlisted molecular pathology procedure), or panel-specific codes 81162–81349 as applicable (e.g., 81162 BRCA1/BRCA2 gene analysis full sequence), 81292–81295 (MLH1/MSH2/MSH6/PMS2), 81307–81308 (PALB2). CPT selection depends on genes included in the panel.
- SNOMED
- 76093004 (Molecular genetic test), 116859006 (Genetic susceptibility finding), 441829007 (Hereditary cancer syndrome), 363779005 (Genetic counseling), 384451000 (Cancer genetic risk assessment)
- 标本量
- Whole blood: 3–10 mL (minimum 2 mL). Saliva: 2 mL or per kit instructions. Fresh tissue: 5–25 mg or 0.5–1 cm³. FFPE tissue: 10 unstained 5–10 µm sections plus 1 H&E-stained slide, or 1 tissue block. Buccal swab: per collection kit specifications.
- 标本稳定性
- Whole blood: stable at room temperature (15–25°C) for 48 hours, refrigerated (2–8°C) for 7 days; do not freeze. Extracted DNA: stable at 2–8°C for 1 month, at -20°C for 1 year, at -80°C for long-term storage. FFPE tissue: stable indefinitely if stored properly (15–25°C, low humidity). Avoid repeated freeze-thaw cycles for nucleic acid extracts.
- 溶血上限
- 0
- 脂血上限
- 0
- 黄疸上限
- 0
- 报告时间
- 168–720 小时
- 医嘱频率
- routine
此检测测量的内容
此检测评估与高癌症风险相关的基因选项。分析的基因可能包括与乳腺癌、卵巢癌、前列腺癌、结直肠癌及其他癌症相关的基因。检测会寻找可能改变DNA序列的特定突变，这些突变可能增加您未来患癌的风险。
检测流程说明
从您手臂抽取血液，样本经过处理提取DNA。然后利用先进的遗传检测方法分析DNA，检测选定基因中的突变。结果与参考遗传数据进行比较，判断是否存在突变。
为什么要进行此检测
医生可能建议进行此检测，如果您有癌症家族史、特定症状，或因年龄或其他因素风险较高。它有助于指导癌症筛查、预防策略或个体化治疗的决策。
检测前的准备
此检测无需特殊准备。抽血可能会有轻微不适，但通常只需几分钟。如果您怀孕或患有出血障碍，请在检测前告知医生。
Reference range
No pathogenic or likely pathogenic variants detected in the genes analyzed. Variants of uncertain significance (VUS) may be reported. Reference interpretation is specific to the gene panel performed; a negative result does not exclude a hereditary cancer syndrome due to panel limitations, undetected variants, or genes not included in the assay.N/A
No fasting required. Pre-test genetic counseling is strongly recommended. Patient should provide informed consent including discussion of: scope and limitations of the panel, possibility of incidental findings, implications for family members, and potential for variants of uncertain significance. A detailed personal and family cancer history (minimum 3-generation pedigree) should be available. For tissue specimens, ensure tumor content adequacy (≥20% neoplastic cellularity preferred). Blood transfusion or recent bone marrow transplantation history must be disclosed due to risk of chimeric results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
临床意义
简称
多基因癌症基因检测（血液）
常见问题
此检测提供关于您遗传性癌症风险的关键信息。识别遗传突变可帮助医生推荐更频繁的癌症筛查、改变生活方式或针对性治疗以减少风险。同时支持您与医疗团队共同决定下一步行动。
此血液检测无需空腹。但请告知医生您是否在服用任何药物或患有可能影响血液检测的疾病（如出血障碍）。
结果通常在1-2周内可获得，具体取决于实验室和检测复杂性。医生将详细解释结果与您。
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