above the puncture site may be applied to
obtain a free flow of blood.
5. When the required blood has been ob-
tained, apply a pad of sterile gauze and in-
struct the patient to apply pressure, then
apply a bandage.
When dealing with infants and very small
children, the heel or great toe puncture is the best
method to obtain a blood specimen. It is per-
formed in much the same way.
The collection of blood from a vein is called
venipuncture. For the convenience of technician
and patient, arm veins are best for obtaining a
blood sample. If arm veins cannot be used due
to bandages, IV fluid therapy, thrombosed or
hardened veins, etc., consult your supervisor for
instructions on the use of hand or foot veins. DO
NOT DRAW BLOOD FROM AN ARM WITH
IV FLUID RUNNING INTO IT. CHOOSE
ANOTHER SITE, THE FLUID ALTERS TEST
. Sterile gauze pads (2 x 2)
. 70 percent isopropyl alcohol or Povidone-
. needles and holder
. tubes appropriate for the test
to be performed
Position the patient so that the vein is easily
accessible and you are able to perform the veni-
puncture in a comfortable position. Always have
the patient either lying in bed or sitting in a chair
with the arm propped up. NEVER PERFORM
A VENIPUNCTURE WITH THE PATIENT
STANDING UP, AND USE CAUTION TO EN-
SURE THE PATIENT DOES NOT FALL FOR-
WARD FROM HIS OR HER SEAT.
1. Wash hands.
2. Assemble equipment.
Explain the procedure to the patient.
Apply the tourniquet around the arm ap-
proximately 2 to 3 inches above the anti-
cubital fossa with enough tension so that
the VEIN is compressed but not the
ARTERY. A sphymomanometer may be
used instead of a tourniquet if a patient is
difficult to draw.
Position the patients arm extended with
little or no flexion at the elbow.
Locate a prominent vein by palpation (feel-
ing). If the vein is difficult to find, it may
be made more prominent by massaging the
arm with an upward motion to force blood
into the vein.
Cleanse the puncture site with a 70 percent
alcohol pad or Povidone-iodine solution
and allow to dry.