Disintegratable films for diagnostic devices

A disintegratable film for a diagnostic device capable of detecting the presence of an analyte of interest in an aqueous fluid sample, comprising:

• a first water soluble polymer having a molecular weight of about 30,000 daltons or less;
• a second water soluble polymer having a molecular weight of about 90,000 daltons or greater;
• and
• at least one reagent capable of permitting detection of an analyte of interest in an aqueous fluid sample,
• wherein the film is in the form of a monolayer of a thickness sufficient to disintegrate upon contact with the aqueous fluid applied to the diagnostic device to release the reagent.

A testing device comprising:

• a support structure;
• and
• at least one disintegratable film supported by the support structure, the disintegratable film comprising:
• a first water soluble polymer having a molecular weight less than about 49,000 daltons;
• a second water soluble polymer having a molecular weight greater than about 60,000 daltons;
• and
• at least one reagent capable of permitting detection of an analyte of interest in an aqueous fluid sample,
• wherein the film is in the form of a monolayer of a thickness sufficient to disintegrate upon contact with the aqueous fluid applied to the diagnostic device to release the reagent.