Carbon Monoxide, Blood Test in California
This page explains the carbon monoxide, blood test, what it measures, and how to arrange it. A carbon monoxide (CO) blood test measures how much CO is attached to hemoglobin, the protein that carries oxygen in your blood. It is ordered when someone has symptoms like headache, dizziness, or confusion that might be from smoke, car exhaust, or faulty heaters, or to check exposure in certain jobs. This page covers the carbon monoxide, blood test for people in California, in Pacific, from what it measures to how to arrange a draw.
- Sample type
- blood
- Category
- General Wellness
- Turnaround
- 1-3 business days
- Price
- $179
- Referral
- Not required
A carbon monoxide (CO) blood test measures how much CO is attached to hemoglobin, the protein that carries oxygen in your blood. It is ordered when someone has symptoms like headache, dizziness, or confusion that might be from smoke, car exhaust, or faulty heaters, or to check exposure in certain jobs.
What it measures
- Carboxyhemoglobin (COHb) — The percentage of hemoglobin carrying carbon monoxide instead of oxygen.
- Hemoglobin (Hb) — The total amount of oxygen-carrying protein in your blood.
- Oxygen saturation (SaO2) — How much oxygen is attached to hemoglobin, often measured alongside COHb.
- Methemoglobin (MetHb) — A form of hemoglobin that cannot carry oxygen; sometimes checked to rule out other causes.
Who it is for
A doctor may order this test if you have unexplained symptoms of CO exposure, such as headache, nausea, or confusion, especially if others in the same building have similar symptoms. It is also used for people who work with combustion engines, furnaces, or in firefighting.
Preparation
No fasting or special preparation is needed. Tell your doctor if you smoke, because smoking can raise your baseline CO level.
Results and what they mean
Results are reported as a percentage of carboxyhemoglobin. Normal levels are usually low, but interpretation depends on whether you smoke and your symptoms. Only a clinician can interpret your results in context; this information is not medical advice.
Requesting the Carbon Monoxide, Blood Test in California
Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. Because the region is uneven, coastal metros, inland towns, and rural counties with very different access to testing — worth planning around when you book.
Frequently asked questions
Does this test hurt?
It uses a standard blood draw from a vein, which feels like a quick pinch.
How long do results take?
Most results are ready in 1 to 3 business days.
Can I eat before the test?
Yes, no fasting is required.
Is my result kept private?
Yes, your results are confidential and shared only with you and your healthcare team.
Carbon Monoxide, Blood Test by city in California
- Carbon Monoxide, Blood Test in Los Angeles
- Carbon Monoxide, Blood Test in San Francisco
- Carbon Monoxide, Blood Test in San Diego
- Carbon Monoxide, Blood Test in Riverside
- Carbon Monoxide, Blood Test in Sacramento
- Carbon Monoxide, Blood Test in San Jose
- Carbon Monoxide, Blood Test in Fresno
- Carbon Monoxide, Blood Test in Concord
- Carbon Monoxide, Blood Test in Bakersfield
- Carbon Monoxide, Blood Test in Mission Viejo
- Carbon Monoxide, Blood Test in Murrieta
- Carbon Monoxide, Blood Test in Long Beach
- Carbon Monoxide, Blood Test in Oakland
- Carbon Monoxide, Blood Test in Stockton
- Carbon Monoxide, Blood Test in Victorville
- Carbon Monoxide, Blood Test in Modesto
- Carbon Monoxide, Blood Test in Lancaster
- Carbon Monoxide, Blood Test in Oxnard
- Carbon Monoxide, Blood Test in Indio
- Carbon Monoxide, Blood Test in Anaheim
- Carbon Monoxide, Blood Test in Antioch
- Carbon Monoxide, Blood Test in Santa Rosa
- Carbon Monoxide, Blood Test in Santa Ana
- Carbon Monoxide, Blood Test in Irvine
- Carbon Monoxide, Blood Test in Santa Clarita
- Carbon Monoxide, Blood Test in Chula Vista
- Carbon Monoxide, Blood Test in Visalia
- Carbon Monoxide, Blood Test in Fremont
- Carbon Monoxide, Blood Test in San Bernardino
- Carbon Monoxide, Blood Test in Thousand Oaks
- Carbon Monoxide, Blood Test in Moreno Valley
- Carbon Monoxide, Blood Test in Fontana
- Carbon Monoxide, Blood Test in Salinas
- Carbon Monoxide, Blood Test in Huntington Beach
- Carbon Monoxide, Blood Test in Santa Barbara
- Carbon Monoxide, Blood Test in Glendale
- Carbon Monoxide, Blood Test in Hemet
- Carbon Monoxide, Blood Test in Vallejo
- Carbon Monoxide, Blood Test in Elk Grove
- Carbon Monoxide, Blood Test in Ontario
All testing in California → Full Carbon Monoxide, Blood Test guide →