| A | B |
|---|
| evacuated tube system | multisample needle, tube holder, vacuum filled tube |
| tube holder | available in clear plastic |
| evacuated tubes | available in glass and plastic |
| vacuum | negative pressure |
| short draw | underfilled tube |
| additive | any substance placed within tube |
| underfilled tube | can cause inaccurate test results |
| additive tube | blood collected may or may not clot |
| tube stopper covered by plastic shield | prevents removal of stopper using "thumb roll" |
| "thumb roll" technique | can cause aerosol formation when tube stopper is removed |
| tube stopper color | indentifies type of addivtive in tube |
| tube expiration date | guarantees reliability of additive and vacuum |
| syringe system | used for small or difficult veins |
| syringe transfer device | used to transfer blood from syringe into ETS tubes |
| 21-23 gauge | common size needle for syringe draws |
| resheathing device | minimizes chance of accidental needlestick |
| barrel and plunger | parts of a syringe |
| barrel of syringe | cylinder with graduated markings |
| plunger | slowly pulled back when drawing blood |
| winged infusion set | small, difficult, elderly, pediatric veins |
