Purpose for blood draw order

minimize contamination risks

order of blood draw order

sterile,
blue
red
green
lavender
grey

ANA

AntiNuclear Antibodyw

what is ANA ordered for

to look for connective tissue disorder

CBC

complete blood count

When would we order a CBC?

To support the diagnosis of infection
Identify disorders releated to WBC
Determine if anemia is present (microcytic, macrocytic,
Assess platelets in bleeding disorders

Main compononents of CBC

WBC count
RBC
Hemoglobin
Hematocrit

WBC

total count of the number of white blood cells in each volume

Eosinophils

Allergic reaction, Inflammation, parasitic

Basophils

Inflammatory and allergic response, similar to mast cells in tissues

Monocytes

On differential summary view

Neutrophils

Marker for infection, inflammation or physiologic stress

Strep is

bacterial

Positive strep test

does not need blood work to confirm

WBC in strep test

would support diagnostic but would not change course

What do you call elevatdd WBC

leukocytosis

Common things to increase wbc count

infection,

what do you call low wbc count

Leukopenia

RBC

red cell count. literally.

hemoglobin count

total amount of hemoglobin in sample measured

male hgb levels

14-18

female hgb

12-14

Anemia

lower than normal count of hemoglobin

hgb is specific to

age

cell indeces

help define the size and hemoglobin content of rbc under microscope smear

mcv

volume of an average rbc

cells that are microcytic are

small

cells that are macrocytic are

large

MCH

mean corpuscular hemoglobin

MCHC

mean corpuscular hemoglobin conc.

mchc

how much hemoglobin per weight, what color of rbc

RWD

red blood cell distribution width, variation in size of rbc

anisocytosis

red blood cells that are of different sizes

sodium

interconnected with water and potassium
main cation of extracellular space
Main determinant of plasma osmolaliy
counterbalances intracellular potassium

serum sodium regulated by

ADH
aldosterone

hypovolemia and hypervolemia are primarily

sodium problems

hypo/hypernatremia are primarily

water problems

Creatinine

actually measuring creatinine clearance