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商家标注的隔音dB值常为实验室数据且未说明测试频段，选购时应索要国标GB/T 8485的Rw计权隔声量报告，仅标'隔音30dB'无频段说明的数据参考价值有限

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Unverified选购超声骨密度仪认准检测参数是否包含SOS（声速）、BUA（宽带超声衰减）和T值、Z值输出；只给出单一'健康分数'而不输出T值/Z值的产品诊断参考价值低72% similar Unverified选择带医疗器械备案或声压级检测报告的产品，认准音量输出的第三方检测数据，无检测报告的贴腹音箱可能存在音量超标风险67% similar Unverified报告应载明检测方法（如酚试剂分光光度法）、仪器型号、采样时间、封闭时长、CMA标志编号，缺少这些信息或只有一个笼统数值的报告可信度低66% similar Unverified商品嘌呤含量标注若只写'低嘌呤'而无具体mg/100g数值，可信度低；应优先选择标注检测数值或有第三方检测报告的产品65% similar Unverified选择注明基于标准化常模（如CBCL、SDQ、Conners、韦氏儿童量表WISC）的测评，而非商家自研的'心理测试'，标准化量表有百分位或T分数参照，自研题库通常无信效度验证65% similar

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