Blood serum bearing film with position indicating mark

摘要

A plurality of spaced blood serum samples are disposed on a serum-bearing film having a leading and trailing edge. The blood serum samples are disposed in an array and each blood serum sample has a leading and a trailing edge. A position-indicating mark is disposed forward of the leading edge of the sample closest to the leading edge of the film by a distance representative of the spacing between adjacent ones of the samples.