If your blood sample is being tested only for a complete blood count, you can eat and drink normally before the test. If your blood sample will be used for additional tests, you may need to fast for a certain amount of time before the test.
Michael Wood II, Purchaser, Retailer and Researcher of Mattresses and Sleep Products. A double and a full size are the same thing. Just different terminology. You'll find that a full size bed - through Google, etc - is 55 Wide x 75 Long. The mattress is usually an inch (or slightly more) smaller in each direction, so; your full mattress will normally measure at (average) 53.5 x 74 - the additional space is to insure that you have room to tuck sheets, etc.
Non-Standard Dimensions. Both full and twin beds have extra-long, or XL, versions, which add an extra five inches (13 cm) to the bed's length. At 80 inches (203 cm), this makes these versions of full and twin size beds as long as king and queen size beds.