Unverified90% confidenceDecision RuleTime unknown
选购时需确认针规（G数）与实际采血需求匹配：末梢毛细血管采血常用28G-30G较细针头以减少疼痛，静脉采血则需要21G-23G较粗规格
1
Sources
90%
Confidence
Long-term
Relevance
-
First Seen
Sources
Related Entities
Related Claims
Unverified需要较大采血量（如血常规、多项指标检测）时应选21G-26G粗针，30G以上细针出血量小易导致采血不足需二次穿刺87% similarUnverified针头细度用G值表示，G值越大针越细痛感越轻，32G-34G为超细型适合怕痛人群，31G为常规选择，追求减痛应选32G以上76% similarUnverified针头越细（G值越大）痛感越轻，但过细针头（33G-34G）注射黏稠度高的胰岛素时推注阻力更大、耗时更长，大剂量注射者可权衡选31G-32G73% similarUnverified采血量仅需0.6μl，属于微量采血，对老年人、指尖皮肤较厚或采血困难的用户相对友好72% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/705341API
curl https://kongchang.com/api/v1/knowledge/claims/705341MCP
get_claim(id=705341)