Step Four of the hemoglobin test is about turning on the HemoCue machine and making sure it’s working properly.

Step Four Video Narration:

The HemoCue machine can plug into the wall with an adapter, which is inserted in the back. It can also run on batteries if an electrical outlet isn't available. Make sure the batteries are removed if it's plugged into the wall. If not, the batteries will run down.

To make sure the HemoCue is functioning properly, open the cuvette tray, and press the 'On' button once. The analyzer will run a self-test upon being turn on, which takes about 10 seconds. When the three flashing bars appear on the screen, the machine is ready for use. Please refer to your supervisor for additional information on how to use the HemoCue.