Lesson 8 - Capillary Collection Flashcards
Where does venous blood come from?
The antecubital fossa/space
Where does capillary blood come from?
The finger or heel
Capillary blood only contains blood from the hand. True or false?
False, it contains blood from blood the vein and other fluids.
Capillary is also known as dermal and is used commonly for tests. True or false?
True
Which is the preferred method for drawing blood from newborns-2 years old?
A. Venous
B. Capillary
B. Capillary or hands
Geriatric patients, patients who have frequent blood tests, and obese patients all have what in common?
They are subject to capillary collection method due to their issues of having small fragile veins, frequently tested, and unable to locate veins.
What tests CANNOT use capillary lood?
Blood culture and routine coagulation tests
Name the puncture equipment used for capillary collection
Hint: there are 4
Lancet (finger puncture device), laser puncture device, microsamples tube for collection), micro collection tubes (microtainer tubes), and microhematocrit tubes(being replaced by microtainers)
What is the order of collection for the capillary tubes?
A. There is no order
B. Green, blue, red, lavender, and then others
C. Blue, lavender, green, red then all others
C. Blue, lavender, green, red, then all others
What additive does the lavender tubes have?
EDTA
What additive does the green collection tube have?
Heparin
What additive does the red collection tube have?
Clot activators
POV: You are a phlebotomist who just received a requisition to draw a capillary sample from a patient, but they are not in their room when you arrive. What do you do?
After receiving you requisition, gather the materials you need: gauze, sharps container, collection micro-tubes (lavender green, red, and others), bandages, warming device, tourniquet, needles, WIS, and syringe and holder.
Finger puncture devices are multiple use?
False, it is disposable and/or single use
Capillary tubes also known as
Hematocrit tubes
Red band and blue bands on capillary tubes mean what?
Red has additive heparin to prevent clotting and blue does not
What is the max. depth of a finger puncture?
No more than 3 mm
What is the max. depth of a heel stick?
2mm for heel stick
What is the max. depth of a heel stick for a new born baby?
0.65-0.88mm for a newborn heel stick
Which fingers are the best to draw from?
Middle or ring finger
Children younger than ___ should be considered for heel sticks.
Younger than 1 year of age
What should you do when your patients’ hands are cold before blood collection?
Use a warmer device for 3-5 minutes and massage the palm gently