Abstract: A hollow capillary tube or cartridge is received within the interior of a hollow tubular syringe-like device to collect a blood sample. A fluid inlet means of the capillary cartridge connects in a fluid conductive relationship with a hypodermic needle attached to the syringe-like device to conduct a blood sample to the interior of the capillary cartridge. A fluid outlet means of the capillary cartridge allows the blood sample to fill the capillary cartridge by expelling air from the interior of capillary cartridge. The fluid outlet means includes a removable piece of fluid conductive fibrous material which allows the air to escape as the blood sample is received and which conducts a small amount of blood sample when the capillary cartridge is completely filled.