performed by monitoring the blood which oozes from the incision and determining when bleeding stops such monitoring occurs at 30 second intervals or other suitable intervals when bleeding does stop the end of the test is implemented as seen in fig1 the practitioner whose arm is designated by numeral 21 holds the rotatable blotter apparatus 20 between his thumb and forefinger the apparatus as will be further explained contains a transparent or clear envelope or housing 21 having contained therein a disk or a circular blotter member 22 the terms envelope and blotter are employed generically and it is understood that different configurations can be employed the circular blotter member 22 may be fabricated from different blotter materials or blood absorbing materials all of which are well known in the art the envelope has a cut off corner opening 23 to allow a designated peripheral portion of the disk 22 to extend therefrom the envelope also has a central aperture 24 to enable the practitioner to manipulate the device as will be explained in this manner the exposed portion of the blotter is directed near the wound while the practitioner takes care that he does not touch the incision with the blotter paper or filter paper 22 in any event it is moved close to the incision so that blood 12 oozing from the incision acutually wets the blotter as soon as a blood spot is essentially fully removed from the site by the absorbing action of blotter member 22 the unit.