diabetes blood test

Diabetes is a condition where someone is unable to adequately regulate their blood glucose levels. The body produces the hormone insulin which helps the body to burn off any consumed sugars. If the body has problems with insulin production or insulin efficiency, the person will develop diabetes.

There are two types of diabetes:

Type 1 diabetes usually develops early in life and is the most common type of diabetes in children. It occurs when the body is unable to produce any insulin.

Type 1 diabetes – treatment is with insulin injections, or using an insulin pump.


Type 2 diabetes is controlled by diet, exercise, or oral medication – or a combination of all three. It tends to develop later in life and is often linked to obesity.

Type 2 diabetes develops when the body is unable to make enough insulin, or when the insulin that is produced does not work properly (known as insulin resistance).

Glucose intolerance or a blood test indicating someone is in a pre-diabetic state, is often reversible by changing the diet and losing weight.



The first aid treatment for diabetes is more likely for low blood sugar levels than for high levels. This is because blood sugar can drop very quickly if the person has missed a meal or done additional exercise they hadn’t anticipated.


diabetes symptoms


Recognising and diagnosing someone may have diabetes

The first indications that someone is unwell and developing diabetes are often:

  • that they are tired
  • always hungry (and yet may suffer weight loss)
  • extremely thirsty
  • passing a lot of urine.

They may become more susceptible to urinary tract and other infections. This is due to the glucose levels building in their blood and their kidneys struggling to clear it from their urine.

They gradually become more and more unwell. They may start to develop a pear drop smell on their breath as they start to break down fats into ketones and exhale them.

The GP will do a BM stick using a lancet to take and test a small blood sample. They will also test the urine. The results will show whether the patient needs referral to a diabetes specialist.

High blood sugar levels usually build over a few days or weeks, whereas low levels can come on very fast.

You are much more likely to be giving first aid to a diabetic patient with low blood sugar (hypo), than high blood sugar. Low blood sugar is a more frequent problem and comes on quickly.

 Hyperglycaemia, if you are looking after someone who develops weight loss, excessive urination, thirst and tiredness, these are symptoms of hyperglycaemia. They should get urgent medical attention to investigate whether they could be suffering from diabetes or glucose intolerance.

Sometimes there is a diagnosis of pre-diabetes.This means their blood sugar is higher than it should be, but not sufficiently high for diabetes. The good news is that this can be  a warning sign. In other words, lifestyle changes and losing weight can often reverse this diagnosis and return the blood sugar levels to within normal limits.

 Diabetes needs careful control.

Unstable diabetes leads to major complications.

  • Nerve endings can become damaged. After that people lose the ability to feel pain in their extremities. This can lead to serious infections, gangrene and amputations as sufferers often fail to react appropriately to injuries
  • Wounds take longer to heal and frequently become infected
  • Damage to the small blood vessels and nerves in the eyes, along with glaucoma and cataracts can lead to blindness
  • Diabetes increases the build-up of atheroma and cholesterol in blood vessels and diabetics are more prone to heart attacks and strokes
  • Due to nerve damage, diabetics often fail to get angina warning pains and might not react to early warning signs that they are at risk of a heart attack
Further reading: for our article on Diabetes, Vital Information Family and Friends Should Know click here

Written by Emma Hammett for First Aid for Life

We strongly advise that you attend a fully regulated Practical or Online First Aid course to understand what to do in a medical emergency. Please visit https://firstaidforlife.org.uk or call 0208 675 4036 for more information about our courses.


First Aid for Life is a multi-award-winning, fully regulated first aid training provider. Our trainers are highly experienced medical, health and emergency services professionals who will tailor the training to your needs. Courses for groups or individuals at our venue or yours.


First Aid for life provides this information for guidance and it is not in any way a substitute for medical advice. First Aid for Life is not responsible or liable for any diagnosis made, or actions taken based on this information.

Emma Hammett
Author: Emma Hammett