Abstract: A device for collecting spinal fluid during a lumbar puncture or other medical procedure includes: a) an upper, generally cup-shaped portion including an open top, an upper cup side wall, an upper cup base plate at a lower end of the upper cup side wall, and a drain hole in the upper cup base plate; b) a lower, generally cup-shaped portion including an open top, a lower cup side wall, and a lower cup base plate at a lower end of the lower cup side wall, the lower cup base plate including a plurality of generally circular openings; wherein the upper, generally cup-shaped portion is removably insertable in and rotatable in the lower, generally cup-shaped portion, and the upper, generally cup-shaped portion includes a rotation mechanism for rotating the upper, generally cup-shaped portion in the lower cup-shaped portion.