Blood sugar
BMP
LFTs
Lipase
Coags, DIC labs
CBC with differential
LDH, haptoglobin, reticulocyte
CK
Thyroid studies
Methemoglobin level
Urine drug screen
Urinalysis
Amanita mushrooms
Acetaminophen toxicity 
Crotinarius mushrooms
Viral hepatitis
Gyromitra mushrooms
Hepatitis A
Jimson weed
Hepatitis B