Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Phlebotomy Equipment

Phlebotomy equipment

QuestionAnswer
what is the preferred anticoagulant for the latest clinical instruments, stat draws; why? Heparin is preferred; it prevents clotting by inactivating Thrombin and Factor X
How does the addition of oxalates, citrates, or EDTA prevent coagulation of blood? Oxalates, citrates, and EDTA remove calcium and prevent formation of calcium salts to prevent coagulation.
Which anticoagulant is preferred in preparation of blood smears; why? EDTA prevents platelet aggregation and limits the distortion of WBCs.
How does the addition of heparin prevent blood from clotting? Heparin causes the inactivation of Thrombin and Factor X. Absence of these prevents conversion of prothrombin to thrombin.
Why is it important to collect the correct volume of blood in the tube. Test results may yield inappropriate results due to inappropriate concentration of blood to solution in the tube. The amount of blood may also be inadequate for a specific test.
The anticoagulant in Purple (lavender) topped tubes EDTA
The anticoagulant in Gray-topped tubes Potassium Oxalate & Sodium Fluoride Na2EDTA & Sodium Fluoride Sodium Fluoride only
The anticoagulant in Green-topped tubes Sodium Heparin, ammonium heparin and lithium heparin
The anticoagulant in Light blue-topped tubes Buffered sodium citrate (3.2% or 3.8%)
The anticoagulant in Red-topped tubes NO anticoagulant or polymer
The anticoagulant in Speckle-topped tubes Contains polymer barrier for serum separation
Which anticoagulants can be utilized in calcium determinations? Only heparin, or lithium heparin (Green-tops)
Why should the gray-topped tube not be used for enzyme determinations or for hematology studies? Gray-topped tubes contain solutions used for glycolytic inhibition tests; oxalates destroy enzymes.
Why should the green-topped tube not be used for blood smears? Green-topped tubes contain heparin which causes Wright's stain to tint with a blue background.
What is the purpose of the gel in the mottled-topped or speckled-topped tubes? Polymer gel in SSTs allow for separation of fluid and cells in a centrifuged sample while preventing clotting factors from acting on the RBCs.
Hematology uses what color-topped tube purple (lavender)top
Test for trace elements uses what-color-topped tube? royal blue top
chemistry tests use what color-topped tube? Green top
Coagulation procedures use what color-topped tube? Light blue top
Glycolytic inhibition studies use what color-topped tube? Gray top
When is a syringe more appropriate for collection than a vacuum tube? In case of fragile veins, or when a phlebotomist needs to control the amount of suction on the vein.
Why must the blood be allowed to clot for at least 30 minutes when obtaining serum? Blood must clot for at least 30 min to ensure completion of formation of a fibrin clot and proper serum separation.
What is the usual needle gauge and length for routine collection? Standard gauge is 21 or 22; standard length is 1 to 1.5 inches.
What does the gauge number of a needle indicate? Refers to the diameter of the needle.
What are advantages of using the vacuum tube method? *Most accurate & efficient *Decreased chance of spill or unnecessary needle exposure *allows for minimal discomfort to the patient *color system allows for clearly identifiable sample types
When is a butterfly used small children, infants, fragile veins. They allow for a smaller angle of insertion when standard needles do not.
Why must the antiseptic 70% isopropyl alcohol be allowed to dry completely? Blood contaminated with 70% isopropyl will damage blood cells and yield erroneous results. A needle stick through damp isopropyl will be painful.
Two substances a phlebotomist uses that should be checked for possible allergy with patient. latex iodine
Created by: sarahs9
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards