What do your RBC Folate levels mean?
The short answer
Rbc folate has never come up on any of the shows we follow. So there's no number here.
Your lab prints 280–791 ng/mL. That range exists to catch disease, not to describe your best.
What RBC Folate measures
The folate stored inside your red blood cells, not the folate circulating in serum.
It reflects months of folate status, so last night's meal or supplement leaves it alone.
Checked against MedlinePlus — Vitamin B Test.
Common questions
What is a normal RBC Folate level?
Most US labs print 280–791 ng/mL. Your report grades you against that range. It exists to catch disease, not to describe your best.
What does your RBC Folate number mean?
Under 280 ng/mL, your report marks it low. Between 280 and 791 it prints as normal. Over 791, your report marks it high. Nobody we follow has drawn a line inside that range.
What does the RBC Folate test measure?
The folate stored inside your red blood cells, not the folate circulating in serum. It reflects months of folate status, so last night's meal or supplement leaves it alone.
Why is there no target here?
Because RBC Folate has never come up in anything we've watched. If that changes, it will be here.