Carbon Dioxide Blood Test

Learn more about the carbon dioxide blood test, its result interpretations, and when to use it with our short guide.

By Patricia Buenaventura on Jun 20, 2024.

Fact Checked by Ericka Pingol.

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Carbon Dioxide Blood Test PDF Example
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What is a Carbon Dioxide Blood Test?

A carbon dioxide (CO2) blood test is a medical test that measures the amount of carbon dioxide in one�??s blood. More specifically, it measures bicarbonate, the most common form of carbon dioxide in one�??s body and an electrolyte. And although the CO2 test can be done independently, it�??s often part of an electrolyte panel. The test, whether it�??s part of a panel or not, can help practitioners diagnose or monitor conditions/diseases related to the heart, kidneys, lungs, and liver, as well as check for an electrolyte imbalance.

Printable Carbon Dioxide Blood Test

Download this Carbon Dioxide Blood Test, which measures the amount of carbon dioxide in one�??s blood.

How does it work?

Step One. Access and Download the Template

When needed, ensure that you have a digital or printable copy of the carbon dioxide blood test by doing either of the following:

  • Clicking the �??Download Template�?� or �??Use Template�?� button
  • Searching �??Carbon Dioxide Blood Test�?� on Carepatron�??s template library�??s search bar on the app or website. 

Step Two. Assess or Examine the Patient

Before requesting a Carbon Dioxide Blood Test, especially if not for monitoring, you must assess or physically examine your patient. Only then should you fill out the request form on the template. 

Step Three. Collect the Sample

Have your client bring the filled-out request form to the laboratory that will collect the sample as proof of your request for the carbon dioxide blood test. 

Step Four. Analyze and Interpret

After receiving the results, you may use the other page provided on the template to write down the results, analyze them, and interpret them. 

Step Five. Securely Store the Template

Since the template has sensitive information and just in case you need it in the future, it�??s best to store it in a secure physical location or on Carepatron. 

Carbon Dioxide Blood Test Example (sample)

We�??ve provided a filled-out PDF file of the carbon dioxide blood test template. Hopefully, this will give you an idea of what the template looks like when used as a request form and a document to write down notes. 

Obtain a copy by viewing the sample below or clicking the �??Download Example PDF�?� button. 

Download this Carbon Dioxide Blood Test Example:

Carbon Dioxide Blood Test Example (sample)

When would you use this test?

Healthcare providers such as primary care physicians, physician�??s assistants, and nurses can request or use the carbon dioxide blood test in the following situations:

Routine Checkup

You may add the CO2 blood test as a routine physical examination to check the patient's health status. 

Investigation and Diagnosis

The carbon dioxide blood test may be requested if the referring physician notices that the patient is sharing concerns/exhibiting/experiencing symptoms of electrolyte imbalances, respiratory acidosis/alkalosis, metabolic acidosis/alkalosis, a lung/liver/digestive disease, or exposure to poison or a toxin. More specifically, it can be used to identify the cause and diagnose a condition that may be affecting one�??s electrolyte and CO2 levels. 


Aside from diagnosis, the carbon dioxide blood test can also be used to monitor who has pre-existing chronic respiratory conditions, metabolic disorders, problems with one�??s kidneys, and diabetes. It can also be used to monitor the treatment for some of these conditions to assess its effectiveness. 

Assessment Before Surgery

The patient�??s CO2 levels must be checked before surgery in case there are any underlying health conditions that may affect their acid-base balance. 

What do the results mean?

Though you are well aware that there are other factors to consider when analyzing results and interpreting them if you need a general idea of what the results of the carbon dioxide blood test, keep reading below:

  • Higher than 29 mmol/L: Your patient�??s body may be losing acidic fluid due to conditions related to the lungs, affecting the balance of the electrolytes in their body. 
  • Lower than 20 mmol/L: Your patient�??s body may be retaining acidic fluid due to a metabolic condition, kidney disease, or diabetes complication, all of which may also be affecting the balance of the electrolytes in their body. 

Why use Carepatron as your Carbon Dioxide Blood app?

Beyond being an app where one can get a copy of the carbon dioxide blood test template, Carepatron is a general practice software that can assist various practitioners in being more productive and efficient. On Carepatron, there are tools and features you can use to streamline processes and automate tasks related to:

Clinical Documentation

There are over 1,000 customizable, fillable, and digitally accessible templates of medical documents, invoices, and notes you can use and store on Carepatron, effectively helping you save time and effort.

Medical Scheduling

Carepatron allows your patients to schedule appointments with you independently and provides you with a system that can send them automated reminders of upcoming appointments via email or SMS.

Medical Billing

With Carepatron, you can offer alternative payment options, send automated reminders of payment dues, and process your clients�?? payments quickly.

Patient Records

On Carepatron�??s patient portal, you can effortlessly input and search for patient details and records.

If you�??re ready to raise the caliber of your practice by making it easier for you to accomplish mentioned responsibilities and more, check out Carepatron. Sign up for a free account and access today!

Clinical Documentation Software
Who typically requests a Carbon Dioxide Blood Test?
Who typically requests a Carbon Dioxide Blood Test?

Commonly asked questions

Who typically requests a Carbon Dioxide Blood Test?

General physicians, their assistants, and nurses typically request carbon dioxide blood tests. 

When are Carbon Dioxide Blood Tests used?

Carbon Dioxide Blood Tests are used to investigate the source of one�??s symptoms, formulate a diagnosis, and monitor the condition or treatment. 

How long does a Carbon Dioxide Blood Test take?

The carbon dioxide blood test typically can take a few hours. Though the sample collection will only take a few minutes, the analysis and interpretation may take time, depending on the laboratory and the referring physician.

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