Guaiac-based fecal occult blood test (gFOBT) One way to test for colorectal cancer is to look for occult (hidden) blood in stool. The idea behind this test is that blood vessels in larger colorectal polyps or cancers are often fragile and easily damaged by the passage of stool.
How far to book in advance: Seven weeks for domestic flights. Book 11 to 12 weeks out for international flights. The worst day to buy: Within 11 days of your flight. One day before the flight was the absolute worst. The best fares for Thanksgiving: For Thanksgiving 2012, the best day to buy was, on average, 96 days (about 14 weeks) before the flight. The bottom line: Do your homework before booking any flight, and make sure you've got the right tools to set yourself up for the best fares.
Knowing the best time to book a flight can get you a much better deal, often to the tune of several hundred dollars. The best time to buy plane tickets. You might think that booking your flight as early as possibleâsay, a year in advanceâmight get you the best deal. But thatâs not always the case. How far in advance should you book your flight? According to FareCompare, the best time to book your tickets is on Tuesdays, ideally early in the morning. Many airlines launch sales late Monday night, so new fares will be available and other carriers drop their rates to match the competition.