What the Crunchy Mom Checks in Her Blood Work (That Her Doctor Skips)

The crunchy mom blood work panel goes well past the standard CMP and CBC most physicians order. Full thyroid panel (TSH, free T3, free T4, reverse T3, TPO and TgAb antibodies), ferritin (not just hemoglobin), vitamin D 25-OH, vitamin B12 with MMA, fasting insulin, hs-CRP, homocysteine, full lipid panel including ApoB and Lp(a), and sex hormones tested at the right cycle day. A 2021 study by Pearce in Thyroid found 27% of women with normal TSH had subclinical thyroid dysfunction visible only on free T3 and antibodies. The crunchy mom blood work strategy is simple: test what mainstream skips, then act on functional ranges.

• Lab range says 15–150 ng/mL is 'normal.' Functional range for energy, hair retention, and thyroid conversion is 50–100. A 2019 review by Lopez in JAMA found women with ferritin under 30 commonly experience fatigue, hair shedding, and low exercise tolerance even with normal hemoglobin. If your ferritin is 18 and your doctor says you're fine, you need a second opinion.
• TSH measures pituitary signaling, not actual thyroid hormone availability or conversion. You can have normal TSH and still have low free T3 (the active hormone) due to poor T4-to-T3 conversion, high reverse T3, or autoimmune attack. A 2014 study by Hoermann in Frontiers in Endocrinology showed TSH alone misses 30%+ of thyroid dysfunction in women.
• Estradiol, progesterone, LH, FSH on cycle day 19–21 (mid-luteal) for a regular cycle. DHEA-S and testosterone any day. Cortisol AM (best fasting around 7–8 a.m.). For perimenopausal patterns, also FSH on day 3. Don't test hormones in the late luteal phase or during a period — the numbers will mislead the interpretation.
• For two weeks, yes — it's the cheapest education on personal glucose response you'll ever get. You'll learn that oatmeal spikes you to 180 and sweet potato doesn't, or vice versa. Long-term wear isn't necessary unless insulin resistance is suspected. Brands like Levels or Stelo work without a prescription now.
• Once a year if every marker sits in functional range and feels stable. Twice a year if you're actively addressing low ferritin, thyroid dysfunction, or low vitamin D. After major life events — pregnancy, weaning, peri-menopause onset, prolonged stress — retest within three months of the change. Test, intervene, retest. That's the entire cycle.