My Blood Sugar Level Is Over 400 What To Do?

If you are suffering diabetes, your doctor may recommend you the target for blood sugar levels and to treat high blood sugar.

Guidelines for Mild to Moderately High Blood Sugar Levels

Go through the following steps if blood sugar is crossing the target range recommended by the doctor, for instance, above 200 mg/dL for more than two readings.

  • If you have missed the usual dose of diabetes medications, get the missed d
  • If doctor has prescribed a dose of insulin as per the sugar level, give the proper dose. If you are failed to do this, call the doctor.
  • If doctor has advised to test for ketones, do this. If the result is showing moderate to huge amount of ketones, call the doctor.
  • Wait for 30 minutes after giving missed medicine or extra insulin.
  • Check blood sugar level once more.
  • Extra liquids are required to replace fluids which are lost through urine. It is better to take sugar-free drinks or water.
  • If high blood sugar symptoms go even more severe and blood sugar level keeps on rising, call the doctor immediately.
  • If the blood sugar level of your child keeps on rising, i.e. up to 240 mg/dL, and if they start getting unconscious or feeling drowsy, take her to the emergency room or call emergency services right away. Be sure to stay with her until emergency support comes.
  • If the blood sugar level keeps on rising in adults, i.e. up to 350 mg/dL, or if the person feels disoriented or drowsy, be sure to call emergency services right away. Be sure to have someone if blood sugar level is increased rapidly so they can call the help for you.

If Blood Sugar Goes Above 400

Be sure to go through these steps if blood sugar level goes severely high, i.e. from 400 mg/dL to 600 mg/dL.

  • Since readings in some sugar meters read at the time when level reaches around 400, wash your finger properly before you check the readings again. Sometimes, sugar on your skin shows high reading.
  • If meter is reading high, be sure that meter is accurate and check the blood sugar again.
  • If it is reading high once more, call the doctor immediately to seek emergency care.

Blood Sugar Is Over 400

What to Do when it Reaches High?

When high blood sugar level returns to the desired range, take medications as prescribed by the doctor and check sugar levels as discussed. Report the condition to the doctor.

To recover the fluids in your body, drink extra water and sugar-free drinks. Don’t drink alcohol and caffeinated drinks. Also don’t take fruit juice, soda pop, and other sugary drinks.


There are different causes behind high blood sugar, such as infection, illness, not sticking to the prescribed diet plan, and skipping doses of drugs. Some of the common symptoms are unusual thirst, high fever, dry skin, loss of vision, sleepiness, weakness on one part of the body, and hallucinations.

Call emergency support immediately if you experience these symptoms. At the same time, also drink a lot of liquid to avoid dehydration and check your sugar levels properly to report your tests to your doctor.

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