Nucleic acid collection column

A nucleic acid collection column for collecting a nucleic acid from a liquid sample containing the nucleic acid, comprising:

• a sample injection portion having an opening into which the liquid sample containing the nucleic acid is injected;
• a support adsorption portion configured to house a support that adsorbs the nucleic acid, the nucleic acid being adsorbed on the support in the support adsorption portion;
• and
• a discharge portion configured to discharge a liquid passed through the support adsorption portion, wherein
• the support includes aluminum oxide having a surface where a water-soluble neutral polymer is adsorbed,
• a space that houses the support in the support adsorption portion has a cylindrical shape, and has a volume of 0.13 μL or more and 13.5 μL or less, and
• an aspect ratio (d1/d2) of the space satisfies 1.01≤d1/d2<15.0, where d1 is a length in an axial direction of the space, and d2 is a diameter in a direction orthogonal to the axial direction.