When your white blood cell count is too low, you have a high risk of getting an infection. Infections can be very serious in people with cancer. If you get an inÂ­fection or if your white blood cell count is very low, your chemotherapy may be delayed, and you may need to be treated in the hospital.hen your white blood cell count is too low, you have a high risk of getting an infection. Infections can be very serious in people with cancer. If you get an inÂ­fection or if your white blood cell count is very low, your chemotherapy may be delayed, and you may need to be treated in the hospital.
Diabetes and Ketones. Ketones in the blood occurs when the body burns its own fat. The presence of high levels of ketones in the bloodstream is a common complication of diabetes, which if left untreated can lead to ketoacidosis. Ketones build up when there is insufficient insulin to help fuel the bodyâs cells.
1 Anytime your blood glucose is over 250 mg/dl for two tests in a row. 2  When you are ill. 3  Often illness, infections, or injuries will cause sudden high blood glucose and this is an especially important time to check for ketones. 4  When you are planning to exercise and the blood glucose is over 250 mg/dl.ithout enough insulin, glucose builds up in the blood. Since the body is unable to use glucose for energy, it breaks down fat instead. When this occurs, ketones form in the blood and spill into the urine. These ketones can make you very sick.