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Med Lab Morera


QuestionUsesAdditiveMode Of Action
Light Gray Glucoses, requires full draw (may cause hemolysis if short draw) Sodium flouride and potassium oxalate. Antiglycolytic agent preserves glucose up to 5 days.
Gold Chemistries, Immunology and Serology NONE Serum separator tube (SST) contains a gel at the bottom to separate blood from serum on centrifugation
Green For lithium level, use sodium heparin for ammonia level, use sodium or lithium heparin and HPV testing. Sodium heparin or lithium heparin Inactivates thrombin and thromboplastin
Light Brown Serum lead determination Sodium heparin Inactivates thrombin and thromboplastin; contains virtually no lead
Light Blue Coagulation tests (protime and prothrombin time), full draw required Sodium citrate Forms calcium salts to remove calcium
Pink Molecular/viral load testing Potassium EDTA Forms calcium salts
Red Chemistries, Immunology and Serology, Blood Bank (Crossmatch) NONE Blood clots, and the serum is separated by centrifugation
Yellow HLA tissue typing, paternity testing, DNA studies ACD (acid-citrate-dextrose) Complement inactivation
Black Westergren Sedimentation Rate; requires full draw Sodium citrate (buffered) Forms calcium salts to remove calcium
Orange STAT serum chemistries Thrombin Quickly clots blood
Dark Blue Trace element testing (zinc, copper, lead, mercury) and toxicology EDTA- Tube is designed to contain no contaminating metals
Purple Hematology (CBC) and Blood Bank (Crossmatch); requires full draw - invert 8 times to prevent clotting and platelet clumping EDTA Forms calcium salts to remove calcium
Light Green Chemistries. Plasma Separating Tubes(PST) with Lithium heparin. Anticoagulates with lithium heparin; Plasma is seperated with PST gel at the bottom of the tube.
Yellow Black Microbiology - aerobes, anaerobes, fungi. Broth mixture. Preserves viability of microorgnanisms.
Created by: christiang993