Micro blood collection tube nwere humanized imewe na snap sichara nchekwa okpu, na tube nwere ike n'ụzọ dị irè gbochie ọbara leakage. N'ihi ọnya ya dị iche iche na nhazi nke okpukpu abụọ, ọ dị mma maka njem dị nchebe na ịrụ ọrụ dị mfe, na-enweghị ọbara spatter.