Ergonomic stool specimen container and enclosing holder systems, methods, and kits

A method of collecting a stool sample, comprising:

• i) depositing a stool sample in a bucket of a sample container, the sample container comprising:
• a) a bucket comprising:
• i) a bucket bottom wall joined around a circumference to a bottom edge of a bucket side wall, a top edge of the bucket side wall circumferentially defining a top opening of the bucket having an internal diameter, and the bottom edge and top edge of the bucket side wall defining a bucket height and a vertical direction therebetween,
• wherein an interior surface of the bucket side wall defines an interior circumferential surface and an exterior surface of the bucket side wall defines an exterior circumferential surface, and
• wherein the bucket bottom wall comprises an interior surface disposed toward the top opening of the bucket;
• ii) a plurality of ridges on the exterior circumferential surface and distributed radially with respect to a bucket central axis and defining grooves between by adjacent ridges, the grooves having a depth of between about 0.2″ to 1″;
• and
• iii) a first threaded engagement portion;
• wherein the top opening internal diameter is greater than the bucket height;
• b) a lid having a lid central axis, the lid comprising:
• i) a lid top wall joined around a circumference to a top edge of a lid side wall, a bottom edge of the lid side wall defining a bottom opening of the lid,
• the lid top wall comprising an interior surface disposed to the bottom opening of the lid, and an exterior surface comprising at least one raised gripping feature;
• ii) a mated threaded engagement portion removably engageable with the first threaded engagement portion of the bucket;
• and
• iii) a sealing plate movably retained in the lid, the sealing plate having a top surface disposed to the interior surface of the lid top wall, a bottom surface disposed toward the bottom opening of the lid, and a central axis collinear with the lid central axis, wherein the sealing plate completely covers the interior surface of the lid top wall and is rotatable with respect to the lid around the sealing plate central axis,
• wherein, when threads of the first threaded engagement portion and the mated threaded engagement portion are engaged with each other, the bucket central axis and the lid central axis are collinear, and the sealing plate seals a junction between the lid and the bucket to form a sealed sample container,
• ii) adding buffer solution to the bucket, and
• iii) engaging the first threated engagement portion and the mated threaded engagement portion to each other to form a sealed sample container.