Look at the bottom left-hand side of the Amtrak ticket. Find a white section with a bar code. Check for any red lines drawn through the ticket, or hole punches. These indicate the conductor has scanned the ticket with a hand-held wand and it has been used.
Direct an Internet browser to the Amtrak website. Select "Review My Trips." Enter your name, ticket number or your profile PIN and account name.
Select the travel itinerary from the trip list. Click on the link.
Read the result to see if the ticket is in use, has been used, or has been scanned by a conductor, indicating it is no longer valid for travel.