Upper abdominal ultrasonography: If clinically indicated, to evaluate the pancreas and/or biliary tree
Cardiac evaluation
Amylase/lipase levels
Liver enzymes and bilirubin levels
Thyroid stimulating hormone, free thyroxine levels
Thyroid evaluation
Hepatitis panel
General appearance (eg, nutrition, weight)
Urine culture
Obstetric ultrasonography: Usually warranted to evaluate for multiple gestations or trophoblastic disease
Serum levels of electrolytes and ketones
Urinalysis for ketones and specific gravity
Hematocrit level
Calcium level
Vital signs, including standing and lying blood pressure and pulse
Volume status (eg, mucous membrane condition, skin turgor, neck veins, mental status)
Neurologic evaluation
Abdominal computed tomography scanning or magnetic resonance imaging: If appendicitis is suspected as a cause of nausea and vomiting in pregnancy
Abdominal evaluation
