Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
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


Tube Top ColorAdditiveMode of ActionUses
Red None Blood clots, and the serum is separted by centrifugation chemistries, immunology, serology, and blood bank (crossmatch, blood typing)
Purple EDTA Forms calcium salts to remove calcium Hematology (CBC) and Blood Bank (Crossmatch); (FULL DRAW REQUIRED)
Light Green Plasma Separating Tube (PST) with Lithium heparin Anticoagulates with lithium heparin; Plasma is separated with PST gel at the bottom of the tube Chemistries
Gold None Serum Separator tube (SST) contains a gel at the bottom to separate blood from serum on centrifugation Chemistries, Immunology and Serology
Dark Blue EDTA Tube is designed to contain no contaminating metals Trace element testing(zinc, copper, lead, mercury) and toxicology
Light Gray Sodium flouride and potassium oxalate Antiglycolytic agent preserves glucose up to 5 days Glucoses (FULL DRAW REQUIRED) or hemolysis may occur
Yellow ACD(acid citrate-dextrose) complement inactivation HLA tissue typing, paternity testing, DNA studies
Yellow-Black Broth mixture preserves viability of microorganisms microbiology - aerobes, anerobes, fungi
Black sodium citrate(buffered) forms calcium salts to remove cal Westergren Sedimentation Rate(FULL DRAW REQUIRED)
Orange Thrombin quickly clots blood STAT serum chemistries
Light Brown Sodium heparin Inactivates thrombin and thromboplastin; contains virtually no lead serum lead detection
Pink Potassium EDTA forms calcium salts Immunohematology
White Potassium EDTA Forms calcium salts Molecular/PCR and bDNA testing
Green Sodium heparin or Lithium heparin inactivates thrombin and thromboplastin For litium level, use sodium heparin. For ammonia level, use sodium or lithium heparin. HPV.
Light Blue Sodium citrate Forms calcium salts to remove calcium Coagulation tests - protime and prothrombin time (FULL DRAW REQUIRED)
Created by: twlrachii