Card Set Information
Unit Test questions
Name some "Don'ts" on Lab precautions
-Remove used needles from disposable syringes by hand
-Bend, break, or manipulate used needles
What are the components of Blood?
Fluid portion is 55%
Plasma contains what? and what is it used for?
Fibrinogen used to form clot(fibrin)
What are some reasons for patient isolation?
To prevent spread of infection
To protect immuno-compromised patient
-normal flora of phlebotomist
-from nosocomial pathogens
For the Blue Top, what is the formula for adjusting anticoagulant
x Sample volume=
The Green top contains what?
Lithium Heparin, prevents coagulation by
-interacting w/ anti-thrombin III
The dilution factor of anticoagulant to blood in the sodium citrate tube is what ratio?
Name 5 types of Patient Isolation?
To compensate for the dilution of anticoagulant to blood, the platelet count must be multiplied by what number?
1.1 (addition of 10% to the intial result)
What are two methods of venipuncture?
Name 3 main venipuncture sites .
-median cubital (
site of choice, anchored, stabilized vein by tissue
tends to roll, located inner portion
located outer portion, skin little tougher
When checking for Patient Identification what are two important steps you must do?
Check pts SSN and name
Do not allow the tourniquet to stay on longer than how many minutes?
What happens if you leave the tourniquet longer than 1 min?
Hemoconcentration could occur
Falsely elevates test result
What should you do if your pt experience the first sign of adverse reaction?
D/C blood collection
Release tourniquet & remove needle
Get pt to a private room
Capilllary collection are used in what situatuions?
In infants <6 months old
Why would you use capillary collection on infants <6 months old?
Dangerous to remove too much blood
Has small volume of blood
What is the correct puncture site for neonates/infants?
True or False
You can puncture the curvature of the heel of an infant.
What is the puncture depth for capillary collection of an infant?
no more than 1.6mm
What reagents and Equipment do you need for a capillary collection?
70% Isopropyl alcohol
sterile blood lancets
What are the steps to collecting capillary blood?
Ensure puncture site is warm
clean w/ alcohol
puncture against grain of skin quickly and firmly
wipe away first drop of blood
1ml of blood
What are some comlications you can run into when collecting capillary blood?
-tissue juice dilution
(collect platelet sample first)
(be truthful to children)
Strict Isolation protects....
When do you use strict isolation?
in contagious dieseases transmitted via:
What is the purpose of Peripheral Smear?
To examine cells under microscope
Test is called
Different types WBC
Name some Wedge smear Reagents & Equipment?
-Two clean glass slides
-EDTA blood sample
Why should you prepare a smears within _hrs?
RBC's become macrocytic
WBC's & platelets degenerate
What are some good qualities of a good (peripheral) smear?
-w/ rainbow appearance
-free of holes, ridges & waves
What are some qualities of properly Stained slides?
Eosinophils have bright
Basophils have dark