Diaper product adapted for collection of exudate sample from an infant

A disposable diaper having a length, a front portion, a rear portion, and a perineal portion between the front and rear portions, the disposable diaper comprising:

• a backsheet comprising an effectively liquid impermeable material;
• a liquid control structure disposed over the backsheet;
• a rear upper layer comprising an effectively liquid impermeable material disposed at least partially in the rear portion of the diaper;
• a pass-through port disposed at least partially in the rear portion of the diaper;
• and
• a sample collection receptacle, wherein the sample collection receptacle is a bag structure comprising an open end and a closed end, and wherein the sample collection receptacle is formed of a liquid impermeable polymeric film.