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* This is not a home test kit. You will need to visit a local lab for testing.
Fasting Required: No
Turnaround Time: 2-10 business days
Specimen Type: Blood
Bicarb, Bicarbonate Blood Test, Bicarbonate Test, Carbon Dioxide Content, CO2 Content, HCO3, Total CO2, TCO2
Biology 101 taught us that the body takes in oxygen when we inhale and lets out carbon dioxide when we exhale. This natural function helps us maintain a healthy level of carbon dioxide (in the form of the electrolyte called bicarbonate). But certain medical conditions—such as electrolyte imbalance, metabolic disorders, or kidney or lung issues—can interfere with the process. Checking the CO2 levels in the blood can help diagnose a health problem; this test is often part of a regular wellness visit, whether performed on its own or as part of a basic metabolic panel.
This blood test shows how much CO2 is in your body.
Blood work for CO2 is often ordered as part of an annual wellness checkup. There are certain symptoms that may also call for a carbon dioxide blood test, including fatigue, persistent diarrhea or vomiting, disorientation, weakness, and respiratory problems.
There’s nothing special you need to do before taking a CO2 test.
Generally, the normal range for carbon dioxide test results is 20 to 29 mmol/L, which stands for millimoles per liter. Results outside the range may require further investigation, such as lung or kidney testing. If you have questions about your CO2 lab test, contact Personalabs to set up a telehealth visit with an experienced, board-certified physician. If you don’t have any symptoms, you may want to monitor your CO2 levels every year to ensure they haven’t changed.
Visit Personalabs if you want to check the CO2 levels in your blood. The CO2 blood test is part of our comprehensive collection of general health tests. Order the tests you want when you need data to make informed healthcare decisions. The process couldn’t be simpler:
Step 1: Purchase your test online. (Check to see if you need your doctor’s approval first in the state where you live.) Download the corresponding lab order; you’ll need to bring it to your testing appointment.
Step 2: Use our locator to find the Labcorp or Quest Diagnostics facility near you. (There are more than 4,000 to choose from across the United States.)
Step 3: Get your blood drawn. (Don’t forget to bring the lab order.).
Step 4: Find your test results in your secure Personalabs portal within 2 to 10 business days. (Contact us if you need help getting your results within a specific timeframe.)
It’s our goal to put the power over your health in your hands. Browse our complete collection of more than 400 tests, and take control of your healthcare decisions today.
Provider | LabCorp, Quest |
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Order Your Test
Create an account, choose your tests, checkout securely, generate your lab order
Generate & Print Out Lab Order
Our physician network will approve your order within 2-4hrs.
Visit the Lab
The test price decides which lab you will visit: Quest or Labcorp. Find a location in your area.
Get Your Results
Results can be provided in as little as 24-48 hrs. For more complex tests, please contact us for turn around times.
Based on 2,267 reviews subject to moderation
The reception was very attentive and warm, very fast and professiread more
Review of 5/12/2025, reflecting an experience on 5/9/2025 by Shavonne L
Easy to order, quick delivery of order. Prices good whe coupons oread more
Review of 5/12/2025, reflecting an experience on 5/8/2025 by Susan G
makes it easy to manage my health without having to talk to a docread more
Review of 5/10/2025, reflecting an experience on 5/7/2025 by Patrick C
Ordered a test by mistake (no lab order generated) and wasn't fulread more
Review of 5/2/2025, reflecting an experience on 4/14/2025 by Gayle S
Went smoothly
Review of 5/2/2025, reflecting an experience on 4/18/2025 by Sabine K
I live in Massachusetts where most of medical procedures are goveread more
Review of 5/2/2025, reflecting an experience on 4/16/2025 by Helen M
Always quick.
Review of 5/2/2025, reflecting an experience on 4/24/2025 by Joshua T
Easy to find my tests, order, sample, and prompt return of the reread more
Review of 4/19/2025, reflecting an experience on 4/14/2025 by Steven M
Good , but nothing listing what you’re charging for what differenread more
Review of 4/19/2025, reflecting an experience on 4/3/2025 by Rodnet J
The tech was extremely rough with me, physically hurt me and pushread more
Review of 4/19/2025, reflecting an experience on 4/2/2025 by Isabelle C
Great service provides easy access to routine wellness and other read more
Review of 4/19/2025, reflecting an experience on 4/10/2025 by Brian B
I don't like the fact that I have to have physician approval beforead more
Review of 4/19/2025, reflecting an experience on 4/4/2025 by Patricia S
Very good, I’m very glad with the Service
Review of 4/19/2025, reflecting an experience on 4/5/2025 by Lorena M
The only problem I have is with the self check-in kiosk. Besides read more
Review of 4/19/2025, reflecting an experience on 4/9/2025 by Dakota H
It’s quick, fast, easy, simple and most importantly discreet !
Review of 4/4/2025, reflecting an experience on 4/1/2025 by Hassan P
The reception was very attentive and warm, very fast and professiread more
Review of 5/12/2025, reflecting an experience on 5/9/2025 by Shavonne L
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It’s quick, fast, easy, simple and most importantly discreet !
Review of 4/4/2025, reflecting an experience on 4/1/2025 by Hassan P