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63 Cards in this Set
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- Back
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What is the function of EDTA?
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to prevent coagulation by binding or chelating calcium
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clotted blood has?
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serum
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fibrin is found in ?
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serum
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in clotted blood there is absence of what?
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clotting factors
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anti coagulated blood contains what?
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plasma
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plasma contains?
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fibrinogen
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whole blood is also called ?
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anti coagulated blood
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the buffy coat contains?
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platelets and WBC's
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to check blood sugar, do you check serum or plasma?
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You may check either one
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what are the 4 stages of hemostasis?
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1.) vasoconstriction
2.) platelet aggregation 3.) coagulation pathway activation 4.) fibrinolysis |
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the function of platelets is checked by what?
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Bleeding time
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PT is responsible for checking what?
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the extrinsic pathway
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PT stands for what?
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Prothrombin time/Pro time
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PTT is responsible for checking what?
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the intrinsic pathway
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PTT stands for what?
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partial thromboplastin time
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EDTA is used for what and what color tube?
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1.) hematology
2.) lavender |
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K2 EDTA is used for what and what color tube?
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1.) hematology
2.) lavender |
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K3 EDTA is used for what and what color tube?
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1.) hematology
2.) pink |
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what does EDTA do?
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removes Ca
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Na Citrate does what?
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binds or chelates calcium
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Na citrate is used in what color tube and for what?
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1.) blue
2.) used for coagulation study (PT and PTT) |
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K+ Oxalates are used for what in what color tube?
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1.) used for blood sugar, alcohol, lactates, and lactic acids
2.) gray tube |
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K+ Oxalates are involved with what?
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Calcium binding
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Na+ heparin, ammonium heparin, and lithium heparin are used for what and in what color tube?
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1.) chemistry tests
2.) green tube |
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thrombin is under the influence of what factor?
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Factor X
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what does heparin do?
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stops the action of thrombin
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you never use a calcium for what?
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a chemistry study
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once glucose leaves a erythrocyte, it becomes what?
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lactic acid
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NaF is a what?
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an anti-glycolytic
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filling up the tubes prevents what?
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hemodilution
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what is the necessary blood to anticoagulation ratio that is always necessary?
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9:1
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what does the 9 represent in the 9:1 ratio?
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9 parts blood
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what does the 1 represent in the 9:1 ratio?
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1 part anti coagulation
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what six color topped tubes are plasma tubes?
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1. yellow top
2. light blue top 3. green top 4. lavender top 5. pink top 6. gray top |
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what three color topped tubes are serum tubes?
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1. plain red top
2. orange or marbled tube 3. tiger top/SST/gold top/marble red |
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anything using a culture goes where?
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microbiology
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anything with plasma goes where?
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chemistry
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hemogard prevents what?
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blood splash
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what are two special use anticoagulants?
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1. ACD
2. SPS |
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what is ACD?
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acid citrate dextrose, the acid citrate acts as an anti coagulant and the dextrose acts as a RBC nutrient and preservative
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what is SPS?
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sodium polyanethol sulfonate
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what does SPS do?
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it acts as an anticoagulant that inhibits complement and phagocytosis and reduces antibody activity
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what is the order of drawl?
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1. yellow- sterile
2. light blue- coagulation time 3. red (plain red) -serum tube 4. red/gray (SST)- serum tube 5. green- chemistry 6. lavender/pink- hematology 7. gray- chemistry 8. others |
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what is the most commonly used phlebotomy needle in adults?
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21 gauge
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what sized needle is used for more fragile veins like those of children?
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23 gauge
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what is the danger of using a needle with a high amount of vacuum?
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it may cause hemolysis and or vein collapse
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the larger the gauge the ______the lumen?
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smaller
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arterial blood drawl is done with what gauged needle?
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22 gauge
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going from needle to syringe, what is the order?
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needle, hilt, hub, syringe
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wings on a syringe needle are called what?
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flanges
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butterfly needles are used when?
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they are used for venipuncture on extremely small or fragile veins on children
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butterfly needles are usually what gauge?
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23 gauge
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what needle has the highest amount of injuries?
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butterfly needles
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what type of call has priority over all other lab calls?
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a STAT call from the ER
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what is the most important step in phlebotomy?
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patients ID bracelet
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in patient is a patient that is released within 24 hrs...T/F?
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false
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it is important to always ask for the patients consent even if they are sleeping, T/F?
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true
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leaving a tourniquet on for more than one minute can lead to what?
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hemoconcentration
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what are the 3 correct steps in palpating veins?
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1. location
2. direction 3. depth |
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it is important to let alcohol dry on venipuncture site because exposure between blood and alcohol can lead to what?
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hemolysis
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what is the only tube that does not get inverted?
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plain red top
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always label your tubes when?
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immediately after obtaining the specimen
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what 4 key things go on the tube once specimen has been collected?
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1. patients name
2. date 3. time 4. phlebotomists initials |
