CBC
Often with depressed white count
Peripheral Blood Smears
Shows intracellular parasites: Maltese Cross sign
May need large smear as parasitemia can be as low as 1%
Can often be confused for malaria parasites
Electrolytes and renal function
LFTs
Total bilirubin and haptoglobin values reflect the intensity of the infection (hemolysis)
Lyme
Urine - hemolysis
CXR - rare but possible ARDS
Often with depressed white count
Shows intracellular parasites: Maltese Cross sign
May need large smear as parasitemia can be as low as 1%
Can often be confused for malaria parasites
Total bilirubin and haptoglobin values reflect the intensity of the infection (hemolysis)
Babesiosis
Roseola infantum
Colorado tick fever
Scabies
Ehrlichiosis
Measles
Heartland virus
Leishmaniasis