Blood Oxygen Level

Have you ever wondered about your blood oxygen levels? These should be checked when relevant to ensure that everything in good working order inside the body. You may have undergone an operation and your doctor clipped a sensor to your fingertip in order to test your blood oxygen levels.

Your blood oxygen level measurements may even get checked while at the doctor’s to know more about your health at a specific time or condition.

Keep in mind that our oxygen levels and lung health are connected in the distribution of oxygen to all our cells simultaneously and can be measured to check how well this is being done within the body.

There are many health and fitness trackers with features that can measure your blood oxygen levels. Let’s discuss below in more detail.



What is blood oxygen level?






Blood oxygen level describes the oxygen levels circulating in your blood which flows in your arteries and throughout the body. We cannot live without oxygen and wouldn’t be able to function if we had an insufficient amount.

When you breathe, your lungs inhale oxygen which brings in fresh oxygen to your bloodstream, while with every exhale carbon dioxide and waste is exhaled out and removed from the body.


If there is an imbalance in your blood’s oxygen and carbon dioxide levels, it can mean your lungs aren’t working well.

Your blood oxygen level also describes the pH balance of your blood. The PH of oxygenated blood should be just over 7 (7.40), otherwise if the PH is lower than this may indicate acidity blood.

Too little or too much acid in your blood indicates a problem with your kidneys and lungs.

Ensuring a balance of blood oxygen level is vital to your health and body.




You must not rely on the information on our website as an alternative to medical advice from your doctor or other professional healthcare provider

If you have any specific questions about any medical matter, you should consult your doctor or other professional healthcare provider

If you think you may be suffering from any medical condition, you should seek immediate medical attention




When to Check your blood oxygen levels?





If you have heart and lung conditions such as breathing difficulties, then it is important for your doctor should check your blood oxygen levels daily at your home.

It is suggested by health experts that people with certain conditions as stated below, should be tested in order to check their blood oxygen levels for further information of the state of their health :-

● Periods of vomiting or feeling sick regularly

● Pulmonary hypertension

● Heart problems/conditions

● Received neck or head injury

● Lung issues

● Asthma/severe breathing trouble



There are many different reasons where low blood oxygen levels can be triggered and overall it happens only when there is not enough oxygen within the body and symptoms can start to develop shortly after –






● Pulmonary Embolism/A blockage

● Scarring or loss of lung tissue

● Pneumonia

● Heart disease

● Air sacs in the lungs to be inflamed and filled with blood, water or pus.

Low oxygen saturation

  • Hypoxemia

It is vital when there is a lack of oxygen levels within the body that we also take action to increase the ratio rate of oxygen present in the body to function better such as getting plenty of fresh air and opening windows frequently.

Keep hydrated throughout the day with proper fluids such as water which can aid in expelling waste and to keep your body oxygenated better.

Practice breathing exercises such as yoga and breathe easy throughout the day by paying attention to your breathe under any situation while avoiding stress completely.



What happens if your blood oxygen level is too low?




A horrible experience and may even leave you in hospital and under round the clock care. You must seek professional help if you should experience unusual symptoms which allows the inability of the bloodstream to circulate the lungs efficiently.



If your blood oxygen level goes outside the typical range, you may start experiencing symptoms. These symptoms include:

  • ● Dizzy or confused/unable to think clearly
  • ● Breathing too quickly/panic attack
  • ● shortness of breath
  • ● headache
  • ● chest pain/racing heart

You may show symptoms of cyanosis if you continue to have low blood oxygen level. Cyanosis is a blue discoloration of your skin, nail beds, and mucus membranes and can lead to respiratory failure, which can be life-threatening.

Oxygen levels below 94% is a cause for concern and shows you that there is an insufficient level of oxygen in the body and the body is in need of medical assistance immediately.

Oxygen levels between 95% and 97% is sufficient to function and get on with the day as indicated by the American Lung Association.

Its important to check your oxygen blood levels using a health monitor that can be obtained by local pharmacies or health stores which can be small, portable and lightweight for ease.

How can you check your blood oxygen level?




There are some options available for you to carry out. You may measure your blood oxygen level with a blood test, i.e., ABG. ABG can also measure your blood pH level. ABG level is very accurate, but it’s invasive.


You can also buy an FDA-approved pulse oximeter from a nearby pharmacy or online retailer to detect blood-oxygen levels.

Pulse oximeter sends infrared light into capillaries and measures how much light is reflected off the gasses in your earlobe, toe, finger.

A reading indicates what percentage of saturated oxygen in your blood, known as the SpO2 level. This method is very simple but less accurate than ABG.

Your blood oxygen level in a pulse oximeter measured as a percentage—95 to 100 percent is considered normal. However, Cyanosis develops if your blood oxygen level drops below 65%.

The Apple Watch Series 6 and certain Fitbit and Garmin devices also track your blood oxygen level through your wrist, and the Wellue Continuous Ring Oximeter takes readings from your finger.

Take Away Message





People with health issues are usually asked to check their blood oxygen level by health experts. This can be done at your local practice or can be checked at home regularly via a handheld device, certain apps that may be installed within smartphones or can be checked by your local pharmacies.

However, the pulse oximeter method is often as useful as an arterial blood gas (ABG). Although the pulse oximeter does have some scope for error, its reading is usually accurate enough.

Your health provider may need accurate information and you may then follow up with an ABG test.

Thank you for reading, if you do have any questions, please let me know and I’ll be sure to help you out.
















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