Week 4 MA 120 In Person Quiz

whole blood composition

plasma - 55%

buffy coat (leukocytes & platelets) - <1%

erythrocytes - 45%

hemostasis

the stopping of bleeding

plasma

This is the liquid portion of blood which contains all clotting factors, as it would in the body. 

serum

This is the liquid portion of blood which NO LONGER contains clotting factors, as it has been allowed to clot, and the clotting proteins are contained in the clot of RBCs, platelets and other formed elements below. 

whole blood

kept close to how it  naturally flows in our systems, is also used often.  This is all blood components together-- plasma, with clotting proteins floating freely, along with RBCs, WBCs, platelets, other formed elements.

additive types

clot activators

anticoagulants

no additive

clot activators

enable blood to clot, yields serum

anticoagulants

prevents blood from clotting, yields plasma or whole blood, depending on additive type

no additive

empty. contains no additive, blood will enter tube and clot naturally without properties altered. will yield serum.

order of draw

blood culture

light blue

red/gold/tiger

green

lavender

gray

culture

additive: growth medium

function: growth medium

yields: bacteria growth

tests: blood culture

light blue

additive: sodium citrate

function: anticoagulant

yields: plasma

tests: bleeding time

red

additive: none or silica

function: clot activator

yields: serum

tests: chemistry - CMP, lipids

gold/tiger

additive: silica & SST

function: clot activator

yields: serum

tests: chemistry - CMP, lipids

green

additive: heparin

function: anticoagulant

yields: plasma

tests: chemistry - STAT, electrolytes

lavender

additive: EDTA

function: anticoagulant

yields: whole blood

tests: hematology - CBC, HbA1c

gray

additive: sodium fluoride

function: anticoagulant

yields: plasma

tests: chemistry/glucose

hemotoma

bruise

hemolysis

bursting or breaking of red blood cells

hemoconcentration

causing a build-up of blood components