Clearly the investigations are mostly dependent upon the aetiology. Principal investigations however should include:
If blood is vomited or passed in stool in the first few hours of life, then the Apt test may be helpful in distinguishing it from swallowed maternal blood.
Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.