Info from an AQS quilt appraiser who spoke Monday at my guild meeting:
If you get blood on your quilt, use your own saliva to wet it. Then run under cold water. Make a gooey paste from a bar of fels naptha soap to wash out spot.
Washing the Quilt: A quilt should not be laundered unless absolutely needed. Washing a quilt every 6 months for 10 years will wear out the quilt.