Test instrument

A test instrument on which a specimen is spread for being measured by a measuring device, comprising:

• a base member having a first opening for passing a specimen;
• a second opening in said base member;
• a specimen spreading layer having a first portion of a first surface thereof which is exposed to said first opening and a second portion of said first surface which is not exposed to said first opening;
• a reagent layer in contact with a second surface of said specimen spreading layer;
• a support member in contact with said reagent layer;
• said second opening provided on an opposite side of said base member than said first opening, at which second opening measurement is performed by a measuring device;
• an absorbing layer provided in direct contact with the second portion of the first surface of said specimen spreading layer in order to absorb excess specimen which has been collected on said specimen spreading layer while allowing said first portion to remain exposed to said first opening;
• wherein the diameter of said first opening is about twice the diameter of said second opening;
• and
• a covering portion of said base member which includes said first opening and which gradually extends towards said specimen spreading layer and said absorbing layer is mounted between said covering portion and the second portion of the first surface of the specimen spreading layer;
• and wherein an edge portion of said second opening is chamfered with a predetermined angle to allow a wider optical path transmitted from the measuring device.

A test instrument on which a specimen is spread for being measured by a measuring device comprising:

• a base member having a first opening for passing said specimen;
• a second opening in said base member;
• a specimen spreading layer having a first portion of a first surface thereof which is exposed to said first opening and a second portion of said first surface which is not exposed to said first opening;
• a reagent layer in contact with a second surface of said specimen spreading layer;
• a support member in contact with said reagent layer;
• said second opening provided on an opposite side of said base member than said first opening, at which second opening measurement is performed by a measuring device;
• said second opening is smaller than said first opening;
• an absorbing layer provided in direct contact with the second portion of the first surface of said specimen spreading layer in order to absorb excess specimen which has been collected on said specimen spreading layer while allowing said first portion to remain exposed to said first opening;
• and
• wherein an edge portion of said second opening is chamfered with a predetermined angle to allow a wider optical path transmitted from said measuring device.