Puncture your finger safely with a lancet to collect blood, and use a blood type testing kit with an EldonCard to determine your type. You need a medicine dropper, water, rubbing alcohol, a tissue to apply the alcohol, a lancet, four Eldonsticks and an EldonCard.
- Wet the test fields on the card
Place the EldonCard on a clean, flat surface. Collect water with a medicine dropper, and place a drop in the center of each circular test field on the card.
- Apply rubbing alcohol to your finger, and poke the tip with a lancet
Wet a piece of tissue with rubbing alcohol and apply the alcohol to the tip of your finger. Press the tip of a lancet against the tip of your finger and use the lancet to puncture your finger deeply enough to draw blood.
- Collect blood with an Eldonstick, and apply the blood to the card
Press the tip of an Eldonstick against the drawn blood until at least 1/8 inch of the tip is covered in blood. Place the tip of the stick at the center of the first test field and, without lifting the stick, use a circular motion to spread the blood to the border of the test field. Discard the stick. Repeat this step with the remaining three test fields.
- Tilt the card clockwise
Lift the card, and tilt it into a vertical position. Wait 10 seconds, then turn the card to the right. Repeat until the card is back in an upright position.
- Let the card dry, and determine your blood type
Set the card down to dry at room temperature. Search the kit you purchased for a chart, and use the chart to determine which blood type outcome matches the outcome on your card.