Is Ferritin 30 ng/mL Bad?
Technically normal, functionally low for most people. 30 ng/mL falls within the official "normal" range (15–150 for women, 30–400 for men), but the bottom of that range was set to detect overt anemia, not optimal function. People with ferritin 30 commonly report fatigue, hair loss, restless legs, exercise intolerance, and brain fog — even when their hemoglobin is "normal."
Where Does 30 ng/mL Fall?
| Category | Ferritin (ng/mL) |
|---|---|
| Iron deficient (overt) | <15 |
| Iron-deficient (functional, symptomatic) | 15–30 |
| Your value (30 ng/mL) | Low normal — often symptomatic |
| Low normal | 30–50 |
| Sufficient | 50–70 |
| Optimal | 70–100 |
| High (investigate) | >200 (women), >300 (men) |
The lab "normal" range is wide because it was designed to flag anemia, not optimize function. For exercise performance, hair quality, energy, and cognitive function, >=50 ng/mL is the practical floor and 70–100 is where most people feel best.
Symptoms of Functionally Low Ferritin
If your ferritin is 30 and you're experiencing any of these, your iron is the likely culprit even though hemoglobin is "normal":
- Persistent fatigue not explained by sleep
- Hair shedding (often diffuse, not patchy)
- Restless legs at night
- Cold hands and feet
- Exercise intolerance / breathlessness on stairs
- Brittle nails (spoon-shaped in advanced deficiency)
- Brain fog / poor concentration
- Pica (cravings for ice, dirt, starch)
Why Ferritin Drops Before Hemoglobin
Your body prioritizes oxygen-carrying capacity. When iron intake drops, hemoglobin holds steady (you still need to breathe) but ferritin (storage) drops first. By the time hemoglobin actually falls, you've been iron-depleted for months.
This is why ferritin is the early warning and hemoglobin is the late warning. If you wait for "anemia" on a CBC, you've ignored your body's first signal.
Read more: Normal Hemoglobin, Exhausted Anyway? Ferritin Is the Answer.
How to Raise Ferritin from 30 to 70+
Iron supplementation works but it's slow. Practical protocol:
- Iron supplement: 25–65 mg elemental iron (ferrous bisglycinate is the most absorbable, fewest GI side effects)
- With vitamin C 250–500 mg (boosts absorption 3–6×)
- With a meal containing protein (also boosts absorption)
- Avoid coffee, tea, dairy within 1 hour (calcium and tannins block iron absorption)
- Take every other day rather than daily — recent research shows alternate-day dosing actually absorbs better than daily (hepcidin signaling)
- Recheck ferritin at 12 weeks — adjust dose
If iron supplements aren't working after 12 weeks, see Iron Supplements Not Working? Here's Why.
Why Iron Supplementation Sometimes Fails
If you've been supplementing and ferritin won't budge, common causes:
- Poor absorption — H. pylori infection, low stomach acid, celiac, IBD
- Wrong form — ferrous sulfate has worse absorption + more GI side effects than bisglycinate
- Blockers — coffee, tea, calcium taken with iron
- Inflammation — high CRP suppresses iron utilization (functional iron deficiency)
- Hidden blood loss — heavy menstrual periods, GI bleeding, frequent blood donation
- Underlying disease — celiac, IBD, autoimmune conditions
If basic supplementation doesn't work, push your physician for a workup beyond a basic CBC.
How Merios Tracks This
Merios pulls ferritin, iron, transferrin, TIBC, and saturation from any standard panel and tracks them longitudinally — so you see your 12-week supplementation experiment land or stall. The Merios Score reflects iron pillar progress alongside vitamin and mineral status.