YP needed 3 blood tests in A&E on Fri. Dr used needle with clear 'butterfly' shaped piece directly below needle but but blood was then drawn via needle through a very narrow flexible tube about 3/4" long before going into the standard receiving tube.
Only 1 vial was obtained, & even after quite a lot of needle waggling, 2nd & 3rd attempts in different sites no more blood was successfully drawn. Dr then divided the blood from 1st tube between 3 & said; 'hope thats enough'.
Thinking about it after, I don't remember this long thin tube before?