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