A sugar chart consists of sections that show dates, corresponding blood sugar levels, medicines that a person takes and factors that may alter levels of blood sugar, according to Healthline. Eating, fasting, underlying health conditions and pregnancy may cause blood sugar levels to fluctuate.
The target blood sugar levels for adults should range between 70 and 130 milligrams per deciliter before meals, be less than 180 milligrams per deciliter within two hours after meals and read eAG at 154 milligrams per deciliter when fasting, explains Healthline. The readings of a nondiabetic should range between 70 and 100 milligrams per deciliter. Blood sugars that read below 50 milligrams per deciliter indicate highly dangerous hypoglycemia, while levels that read higher than 180 milligrams per deciliter show that blood sugar levels are critically high.
In addition to knowing when blood sugars are extremely high or low, checking blood sugar levels and recording readings consistently may aid in knowing if a person requires medicine, states Healthline. A person with persistently high or low levels should consult with his doctor, who may recommend changing medications.
Factors that may alter blood sugar levels include dirty meters, fluctuations in levels of activity, infections and weather changes, according to Healthline. Not taking medicines at the right time and certain minor diseases may fluctuate blood sugars as well.