Iron & Ferritin
in reserve
For the fatigue, hair loss, restless legs, and brain fog that keep getting explained away because the blood count came back normal. Iron & Ferritin goes through what iron does beyond hemoglobin, why a normal CBC can't see it running low, what each ferritin cutoff actually answers, who gets missed most often, and how repletion works when it works.
Five lectures, taught in the order I think it through in clinic, so you leave knowing which labs to ask for and how to have a better conversation about the result.
$67 standalone · Included with membership ($47/mo)
What Iron & Ferritin is
Iron & Ferritin is a five-lecture patient course from Wayfinder's Well on iron deficiency without anemia: what iron does beyond hemoglobin, why a normal complete blood count can miss low iron, where the common ferritin cutoffs come from, who is most at risk, and how oral and IV repletion work. Taught by Dr. Joyce Knieff, NMD, LAc.
Why a normal blood count can still miss low iron
A complete blood count measures your hemoglobin and the size and number of your red blood cells, so it tells you whether you're anemic. It says nothing about how much iron you have in reserve. Iron runs out in an order: the stores go first, then the tissues that use iron every day start to feel it, and the hemoglobin drops last. By the time a CBC flags anything, you've usually been short for a while.
So the visit ends with a normal lab and no answer, and the fatigue gets filed under stress, or sleep, or perimenopause, or getting older. The test that would have answered the question is ferritin, and even then it depends on which cutoff the lab printed, whether inflammation is pushing the number up, and what your transferrin saturation says next to it. That is the ground this course covers.
What you'll walk away with
By the end of the course, you will be able to:
- Explain what iron does past making hemoglobin, and why the brain tends to feel the shortfall first.
- Say what a CBC measures and what it can't, and recognize the symptom pattern of iron deficiency without anemia.
- Know where the common ferritin cutoffs come from (15, 25, 30, 50, and 70 to 100) and which question each one answers.
- Account for inflammation when you look at a ferritin, and know why transferrin saturation belongs beside it.
- Know who needs testing: heavy periods, pregnancy and postpartum, endurance training, absorption problems, and restless legs, where the sleep medicine guideline sets a higher cutoff than the general one.
- Understand how oral iron gets absorbed, why alternate-day dosing gets more of it in, what coffee and tea do to a dose, and when an IV infusion is the right conversation to have with your provider.
- Walk into your next appointment knowing which labs to ask for and how to talk about the target.
What's in the course
Five lectures, self-paced, in the order I would explain it to you in the office.
- 01
What Iron Actually Does: Beyond Hemoglobin
Iron's job list past the red blood cell. The three labs that count, how the body budgets its iron, the order the stores run out in, why the brain feels iron loss first, and the iron and thyroid connection.
- 02
The CBC Trap: Why “Normal Labs” Doesn't Mean Iron Sufficient
What a complete blood count measures and what it can't. The symptom map of iron deficiency without anemia, whether treating it helps, heavy menstrual bleeding as the iron drain that gets treated as normal, and what to ask for.
- 03
Where the “Normal” Range Fails: The Ferritin Threshold Question
Where the WHO cutoff of 15 came from. The 2021 studies that put the physiological threshold near 25 and the absorption threshold near 50. What inflammation does to the number, the reconciled ferritin map, and transferrin saturation as the second axis.
- 04
Who Actually Needs Iron: Symptom Recognition and At-Risk Populations
When to test. The high-volume at-risk groups and the people whose absorption is impaired. Restless legs and the brain iron connection, with its own treatment threshold. Pregnancy and postpartum.
- 05
Repleting Iron: What Works, What's Changed, What to Ask For
Oral iron basics and the alternate-day dosing change. Practical taking instructions. When oral iron fails and IV iron comes into the conversation. Postpartum repletion, the ferritin-in-pregnancy question, and how repletion is monitored.
Who's teaching
I'm Dr. Joyce Knieff, a naturopathic doctor in Minnesota. My clinical focus is MCAS, motility disorders, hormones, and the places they overlap.
Iron is the deficiency I find most often in people who were told their labs were fine. This course is the conversation I have in the office, in full, with the research behind each piece, and with the parts that are still contested named as contested.
Questions people ask
Is this medical advice?
No. The course is educational. It gives you the framework and the language for a conversation with a provider who knows your history. Which labs to run, how to interpret them, which form and dose of iron, and whether an infusion is the right call stay with your provider.
My blood count came back normal. Is this course still for me?
That is exactly who it is for. A normal CBC rules out anemia and says nothing about your iron stores. Iron deficiency without anemia has its own symptom pattern, and the second lecture is about it.
I already know my ferritin number. Will the course help me make sense of it?
The third lecture goes through where each common cutoff comes from and what changes the number, including inflammation, so the conversation about your result starts further along. The interpretation itself belongs with your provider.
How long does it take?
Five lectures, self-paced. Watch one a day across a week or all of them in an afternoon, and come back to the fifth lecture when you and your provider are choosing a repletion plan.
Is this included in the membership?
Yes. The membership ($47/mo) includes Iron & Ferritin along with every other course in the library, plus a new course on the last Friday of every month, the members' Discord with a monthly live teaching and Q&A, and 35% off practitioner-grade supplements on Fullscript.
Can I buy it on its own?
Yes. Iron & Ferritin is $67 on its own. The membership ($47/mo) includes it along with every other course in the library, and your rate is locked on the day you join, for as long as you stay a member.
The iron problem a normal lab can't see.
Five lectures on why the blood count misses low iron, which numbers actually answer the question, and how repletion works. Taught the way I would explain it to you in the office.
$67 standalone · Included with membership ($47/mo)