The Thyroid Fixer – Ep. 593

Quick Fixes: How to Get ACCURATE Thyroid and Hormone Lab Results: Do's and Don't of Lab Testing
Host: Dr. Amie Hornaman
Date: January 6, 2026

Episode Overview

In this empowering solo episode, Dr. Amie Hornaman dives deep into the do’s and don’ts of thyroid and hormone lab testing. She breaks down exactly how to prepare, when to test, and common mistakes that can lead to inaccurate results. With plenty of tough love and actionable tools, Amie’s mission is to help listeners become “unstoppable, unapologetic badasses” by understanding and optimizing their labwork for better health outcomes. She also highlights her Facebook community and a new at-home thyroid and hormone testing kit.

Key Discussion Points & Insights

1. Empowering Listeners Through Lab Knowledge

• Labs as a tool for empowerment and education in the journey to optimal hormone and thyroid health.
  • “Labs do that when you have your numbers in front of you. You are already empowered right there.” (00:01)
• Importance of not settling for conventional medicine’s dismissals of “normal” results.
• The “Just Fix Your Thyroid” Facebook group as a resource for questions, support, and live Q&As.

2. Why Proper Lab Testing Matters

• Testing provides the personalized data needed for precise diagnosis and effective treatment.
  • “In order to know exactly what’s going on in your body and to do something about it, you need to test and not guess. But you have to test the right way.” (05:10)
• Many conventional doctors fail to order a comprehensive thyroid/hormone panel or dismiss symptoms as “just aging.”
• Risks of untreated or under-treated hypothyroidism: Increased risk of CVD, dementia, osteoporosis.

3. Comprehensive At-Home Testing Panel

• Dr. Amie details her at-home kit which tests for:
  • TSH, Free T4, Free T3, Reverse T3, TPO/TGA antibodies, Progesterone, Estradiol, Free & Total Testosterone, SHBG, FSH, LH.

4. Getting Accurate Lab Results: Best Practices

• Fasting:
  • Always test in a fasted state (water only, no coffee, supplements, or medications). (09:55)
• Timing:
  • Labs should be drawn before 9:00 am for both thyroid and hormones.
• Menstruating Women:
  • Test hormones (estradiol, progesterone, etc.) on days 19–22 of your cycle.
• Perimenopause/Menopause:
  • No specific cycle timing needed; any day is fine if cycles are irregular/absent.

5. If You’re Taking Medications or Supplements

• Thyroid Medications:

  • Do NOT take thyroid meds or glandulars the morning of labs.
  • Hold T3-containing meds (NDT, Armour, Cytomel, compounded T3/T4, thyroid glandulars) for 18–24 hours before labs. This avoids a “falsely elevated” Free T3 result. (24:30)
    • Memorable moment: “If you go over 26 hours, now you’re going to be artificially low... 18 to 24 hours, that’s the sweet spot!” (27:20)
  • T4-only meds: Withhold the morning of, but timing isn’t as critical due to slower action.
  • Avoid biotin (in hair/skin/nail supplements, B formulas) for 5–7 days before labs—skews TSH and Free T3.

• Hormone Replacement Therapy:

  • Progesterone:
    • Oral: Take the night before.
    • Cream or trochee: Use the day before; not the day of labs.
  • Testosterone:
    • Injections: Labs should be drawn 6–7 days after last injection (for weekly dosers); this gives a trough level for accurate monitoring.
      • “If you test three to four days after your shot, you’ll get an abnormally high reading…practitioner might lower your dose unnecessarily.” (41:00)
    • Cream/trochees: Last dose the day before.
  • Estradiol:
    • Cream/trochee: Up to day before only.
    • Patch: Test on day 2 or 3 of patch cycle, not immediately after changing.
      • “When we apply a patch, we naturally get a little bit of a burst, a little bit of a bolus dose.” (53:10)
    • Injectable: 2–7 days after last dose, depending on dosing schedule.
    • Avoid oral estrogen due to risk and reliability concerns.

6. Special Scenarios

• Birth Control:
  • Can’t stop for labs; just note you're on it so results are interpreted accordingly.
• SHBG, FSH, LH Testing:
  • No special timing or hold needed, but levels influenced by overall hormone intake/status.
• Supplements:
  • Only biotin must be stopped; others can generally be continued through the day before.

Notable Quotes & Memorable Moments

• “No more being dismissed by your doctor. No more being told your labs are normal…no more recycled medical advice.” (01:00)
• On T3 timing:
  • “There are messages out there to take your thyroid medication in the morning and then test four hours later, which is called testing at the peak. No! You do not take your thyroid medication before your labs.” (26:00)
• On biotin:
  • “The only supplement you truly need to avoid is anything containing biotin. That will skew your TSH and your Free T3… Nothing else will skew your labs like biotin will.” (55:35)
• On empowerment:
  • “When you have your numbers in front of you, you are already empowered right there… You’re an unstoppable, unapologetic badass.” (59:20)

Key Timestamps for Important Segments

• Lab empowerment and “Just Fix Your Thyroid” community – 00:00–04:30
• Why comprehensive lab testing matters – 05:00–09:30
• Fasting, timing, and basics of lab prep – 09:30–18:30
• Instructions for those NOT on medications – 18:30–23:45
• If you’re ON thyroid meds (when/how long to hold before testing) – 23:45–32:00
• On biotin supplements – 32:00–34:00, 55:35
• Hormone replacement therapy (progesterone, testosterone, estrogen) – 35:00–54:00
• Birth control and special scenarios – 54:00–56:00
• SHBG, FSH, LH lab notes and troubleshooting – 56:00–58:00
• Wrap-up, empowerment, and closing advice – 58:00–end

Action Steps and Takeaways

• Always test fasting and before 9am.
• Withhold thyroid meds (especially T3) for 18–24 hours before labs.
• Only withhold biotin for 5–7 days; most other supplements are fine.
• Hormone replacement timing varies—review exact guidelines for your method.
• Plan your labs ahead for accurate, actionable results.
• Use community resources like the Facebook group for support and Q&A.

Episode Tone:
Dr. Amie is direct, energetic, encouraging, and passionate, blending tough love with practical guidance. She consistently returns to themes of self-advocacy, empowerment, and not settling for inadequate care.

For more information or to access the at-home thyroid/hormone panel or join the Facebook group, see Dr. Amie’s show notes and resources.