Smaller tubes reduce the volume of blood drawn.
Rudisill
Terry
T
ICU, Wellstar Douglas Hospital, Douglasville, Ga., USA.
D001800:Blood Specimen Collection / Q000295:instrumentation* / Q000379:methods* / Q000451:nursing; D006801:Humans; D020896:Hypovolemia / Q000097:blood*; D007362:Intensive Care Units; D008297:Male