Abstract: A blood sampler, especially for drawing samples of arterial blood, is provided with a handle, and a needle adapter to which a puncturing needle is attachable, and a sample capillary connected with the puncturing needle. For robust and cheap manufacture handle and sample capillary are blow-molded to form a single unit and the needle adapter is either molded integral therewith or configured as a separate component, which is insertable into an opening in the handle leading into the sample capillary.