Lab Interpretation Flashcards
What color cap tube is used to collect a CBC?
Lavender
Decreased WBC counts could indicate?
- Malignancy
- Immunocompression
- Autoimmune deficiency
- Sepsis
When are Neutrophils increased?
What is the lifespan of neutrophils?
- Infections - immature bands
- Trauma
- Stress
- RA
- Melocytic leukemia
- Gout
When are you likely to see left shift?
“Bands”
Immature WBC usually in the setting of acute and/or severe infection
What is the absolute neutrophil count?
- ANC = (%neutrophils + %bands) * WBC over 100
- Used to determine severity
- < 1500 is neutropenia
- < 500 is severe neutropenia
Increased lymphocytes are highly indicative of what kind of infection?
When can you see decreased lymphocytes?
Viral
HIV, leukemia, sepsis, steriods, chemo
What are the causes for elevated monocytes?
- Leukemia
- Viral infection (EBV)
- Chronic inflammatory disease
- Parasitic infection
- TB
What is the most common reason for increased eosinophils?
What are some other reasons?
Allergies
Addisons disease, Parasitic infections
What WBC counts are increased in the setting of allergies?
Basophils
Does altitude increase or decrease RBC counts?
Increased
What are the causes for increased mean corpuscular volume (MCV)?
Macrocytic Anemia
- Folate or B12 deficiecy
- Megaloblastic anemia
- Liver disease
- Hypothyroidism
What are the causes of decreased MCV?
Microcytic anemia
- Iron deficiency
- Lead poisoning
- Thalassemia
A normal red cell distribution width (RDW) in presence of anemia suggests what diagnosis?
Thalassemia
What lab is used to rule in or out many metabolic concerns because it looks at electrolytes and renal function?
BMP
What does BUN measure?
Level of renal and liver function
