Patent ID: 8252139

Claim:
A method of making a fluid sample collection card comprising: providing a support layer with a substantially planar upper surface; providing a card stock; forming an upper layer with the card stock, the upper layer including a sample window and a viewing window formed through the upper layer; supporting an absorbent layer with the substantially planar upper surface; and positioning the upper layer on an upper surface of the absorbent layer such that a first absorbent layer portion of the absorbent layer is directly accessible and viewable though the sample window and a second absorbent layer portion of the absorbent layer is visible through the viewing window, wherein the upper layer is configured such that as a fluid is being absorbed by the first absorbent layer portion, presence of a portion of the fluid within the second absorbent layer portion indicates that a first volume of the fluid absorbed by the absorbent layer is a minimum necessary volume of the fluid sufficient to perform at least one test on at least one component in the fluid.