Bloody Good

Cytomegalovirus (CMV) Blood Test

Type

Blood Testing

Biomarkers

1

Duration

15 min

Results

7 days

Specialized test targeting specific health concerns or advanced biomarkers.

Essential fatty acid testing measures the levels of omega-3, omega-6, and other fatty acids in your blood. The omega-3 index — measuring EPA and DHA as a percentage of total red blood cell fatty acids — is an emerging cardiovascular risk marker. An index below 4% is associated with higher risk of sudden cardiac death, while above 8% is considered optimal. The balance between omega-6 and omega-3 fatty acids also matters: a high omega-6 to omega-3 ratio promotes inflammation, while a lower ratio is anti-inflammatory. Most people in Western diets have ratios of 15:1 or higher, versus the recommended 4:1 or lower. Testing helps personalize supplementation and dietary choices.

Key Details

Key Marker
Omega-3 index (target >8%)
Fasting Required
No
Sample Type
Blood draw or finger-prick
Turnaround
5–10 business days
Common Use
Supplementation guidance, cardiovascular risk

Who Is This For?

Anyone taking fish oil or omega-3 supplements who wants to verify they're achieving optimal levels. People interested in cardiovascular risk reduction beyond standard lipid panels. Those following anti-inflammatory diets who want to measure their omega-6 to omega-3 ratio. Athletes interested in recovery and inflammation management. Vegetarians and vegans who may not get enough EPA and DHA.

What's Included

Omega-3 index (EPA + DHA)
Omega-6 to omega-3 ratio
Individual fatty acid levels (varies by panel)

Preparation Required

No fasting required. Continue your normal diet and supplements — the test measures your steady-state levels. Some labs use a finger-prick blood spot test that can be done at home.

Frequently Asked Questions