The severity of the symptoms depends on the concentration of the carbon monoxide, the duration of the exposure and the size of the area. If a person is in a small, enclosed area without ventilation, they are more likely to have a more severe case. If a pregnant woman is exposed to carbon monoxide, the baby absorbs more carbon monoxide from mom's blood than mom does herself. Mom may not have many symptoms but the baby may be seriously affected. Pregnant moms must be very careful to prevent exposure.
Carbon monoxide is diagnosed by a special blood test.
It is not detected by routine blood tests. If you suspect carbon monoxide poisoning, you need to be tested while you are ill. Carbon monoxide does not stay in the blood stream long. If you are tested when you do not have symptoms, chances are that the carbon monoxide will not be detected. Treatment depends on the amount of carbon monoxide found in the blood and the symptoms.