Does low hemoglobin contribute to high blood glucose levels?

Low hemoglobin does not cause high blood glucose—in fact, there is a relationship between glucose and hemoglobin in the opposite way! Glucose in the blood bonds to the hemoglobin protein in red blood cells. People with high glucose levels (blood sugar) are more likely to have higher glycohemoglobin (sugar which is bonded to hemoglobin) because of the availability of sugar in the blood. Here we see that the cause is a high glucose level, which occurs with diabetes, and the effect is a high glycohemoglobin. Please bear in mind that this doesn't refer to just the hemoglobin itself and that a high blood sugar will not necessarily cause high hemoglobin. The relationship here is between high levels of blood sugar and high levels of sugar which is bonded to hemoglobin.

A low hemoglobin count should not be the cause of high blood glucose, though it is possible that with less hemoglobin to bond to, sugars may remain in the plasma of blood. Every body is different, and there may be a number of factors involved in either one or both of these symptoms.