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The Funk'tional Nutrition Podcast

What Labs Should I Ask My Doctor For? Basic Blood Work (& Beyond) | Ep 386

The Funk'tional Nutrition Podcast

Erin Holt

Mental Health, Health & Fitness, Alternative Health, Nutrition

4.9759 Ratings

🗓️ 18 November 2025

⏱️ 29 minutes

🧾️ Download transcript

Summary

Most people walk out of their routine doctor’s appointments with “normal” labs and zero clarity about why they’re tired, inflamed, or not feeling like themselves. In this episode, Erin breaks down what your CMP, CBC, and lipid panel actually measure, and why routine bloodwork often misses the early signs of metabolic dysfunction, inflammation, thyroid issues, and nutrient depletion.

So what are the best add-on markers to ask for that will give you a genuinely comprehensive picture of your health? From fasting insulin and hemoglobin A1c, to thyroid antibodies, ANA, HS-CRP, ferritin, vitamin D, and GGT, Erin provides critical context about each of these – and how each one uncovers clues your doctor’s standard panel never will.

P.S. Download our FREE bloodwork checklist for the exact labs Erin recommends in this episode. 

In this episode:

  • Why “normal” blood work doesn’t always mean “optimal,” and how functional ranges reveal imbalances years before disease
  • The must-have trio for evaluating metabolic health beyond fasting glucose: insulin, hemoglobin A1c, and uric acid
  • The #1 liver marker missing from most CMPs and how it reflects toxin load, oxidative stress, and glutathione depletion
  • Why TSH alone is an incomplete thyroid screen, and how thyroid antibodies can detect Hashimoto’s years earlier
  • How markers like ANA, ferritin, HS-CRP, and RBC magnesium work together to uncover hidden inflammation and autoimmune activity


Resources mentioned:

FREE GUIDE: The 19 Blood Tests You Should Ask For

Apply to work with us 1:1 here!

Episode 212: A Functional Medicine Approach to Labs


FOR OUR FULL LIST OF LINKS + RESOURCES, HEAD TO: 

https://www.thefunktionalnutritionist.com/podcast/386-bloodwork-labs 

Check out The Funk’tional Nutritionist: Website | Instagram


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Transcript

Click on a timestamp to play from that location

0:00.0

traditional lab testing, it basically goes like this, disease, normal disease. So if it's too

0:05.9

low, that's a disease, in the middle of your normal, too high disease. Whereas a functional

0:10.9

medicine lens, the spectrum is a little bit more varied. So there's out of range, there's

0:16.4

malfunction. We're screening for imbalances. We're looking for more tighter ranges, reference

0:22.9

ranges, more optimal ranges, because we're really trying to screen for that optimal health.

0:27.7

So it's important to understand that traditional reference ranges for conventional blood work

0:34.7

don't always represent optimal health.

0:40.0

Welcome to the functional nutrition podcast.

0:42.7

Spell it with a K because we do things a little differently around here.

0:47.0

I'm your host, Erin Holt, and I've got 15 years of clinical experience as a functional nutritionist and mindset coach, creating a new model that I call intuitive functional

0:51.6

medicine, where we combine root cause medicine with the innate

0:54.8

intelligence of your body. This is where science meets self-trust. Your body already knows how to

1:01.2

heal, and this show is going to show you how. If you're looking for new ways of thinking about

1:05.8

your health, be sure to follow and share with a friend because you never know whose life you might

1:10.0

change.

1:18.8

What labs should you ask your doctor for? We're going to talk about basic blood work and a little bit beyond in today's episode. I'm going to try to make this one a quick and dirty. I have a team

1:24.0

meeting in exactly 40 minutes. So let's see if I can pull this one off. My mom,

1:28.5

going to shout out Sharebear, recently asked me this question. She's like, I'm going to my doctor

1:32.9

just for annual, like typical standard issue lab work, routine blood work. What should I make

1:40.5

sure he tests for? And I thought this was such a great question and such a great

1:44.7

episode to bring to the show. Today we're going to pull it back to the basics. I'm going to use

1:49.8

plain speak as much as possible here. So this is not going to be a practitioner level episode.

...

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