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Unlock the Secrets of Your Health: Functional vs Clinical Range on Labs

  • Writer: Gwen Krehbiel
    Gwen Krehbiel
  • Jan 7
  • 5 min read

Have you ever had obvious health symptoms but your lab tests come back normal?


photo of someone's lab test results and a test tube of blood
Unlock the Secrets of Your Health: Functional vs Clinical Range on Labs

When it comes to interpreting lab results, a natural health professional approaches numbers in a way that often contrasts with the traditional Western medical perspective.


While both methods aim to understand the state of a patient’s health, a natural health professional typically has a broader approach.


Rather than focusing solely on identifying disease, they often look at optimal ranges, underlying patterns, and overall wellness goals.


Here’s a look at how the interpretations differ and why a second opinion can offer valuable insights.


Functional vs. Clinical Ranges on Labs


One of the primary differences lies in what is known as the functional range versus the clinical range. Traditional doctors rely on clinical ranges to determine if a patient’s lab results are “normal” or if they indicate a medical issue. This range is usually derived from averages within the general population, meaning that only when someone’s results fall significantly outside of this range are they flagged as a problem.


A natural health professional, however, often uses functional ranges, which aim to identify the optimal state for health and wellness rather than just the absence of disease.

For example, while a traditional doctor might see a glucose level of 99 mg/dL as “normal,” a natural health professional might interpret it as a sign that blood sugar is creeping towards a state that could lead to insulin resistance or prediabetes. This insight allows them to address blood sugar management earlier, potentially preventing the onset of chronic conditions like Type 2 diabetes.


Graph showing normal vs. optimal ranges for lab tests.
This is why your lab tests are ‘normal’ but you still feel sick!

Looking at Lab Patterns Over Isolated Numbers


Traditional medicine often assesses each lab result as an individual marker, usually examining only those that are far out of range. However, a natural health professional looks for patterns across a broader spectrum of test results to get a fuller picture.

Here are some examples:


  • Liver Enzymes: In conventional settings, only if liver enzymes such as ALT or AST are significantly elevated would a traditional doctor investigate liver disease. But a natural health professional might see mild elevations in these enzymes as an early sign of liver stress, even if they’re within clinical range. This allows for preventive measures—like dietary changes and gentle detoxification—before any substantial liver damage occurs.

  • Thyroid Markers: While traditional doctors often only look at TSH (thyroid-stimulating hormone) to assess thyroid health, a natural health professional may consider T3 and T4 levels as well as thyroid antibodies. Subtle patterns in these markers might point to early thyroid imbalances, which could explain symptoms like fatigue, weight gain, and mood swings that could otherwise be dismissed if TSH alone is within the clinical range.

  • Inflammation Markers: C-reactive protein (CRP) is often overlooked unless levels are very high, signaling acute inflammation. In functional health, even mildly elevated CRP levels may indicate underlying chronic inflammation. This early detection helps to tackle inflammation sources before they escalate into issues like cardiovascular disease or autoimmune conditions.


Considering a Client’s Overall Lifestyle and History


A natural health professional also views lab results within the context of the client’s lifestyle, health history, and even specific health goals. For instance:


  • Hormone Balance: If a woman reports chronic fatigue, mood swings, and weight gain, a traditional doctor might test for estrogen or progesterone levels only if symptoms suggest an extreme hormonal imbalance. By contrast, a natural health professional is likely to test multiple hormones, such as cortisol and DHEA, looking at how stress and lifestyle factors influence hormone health.

  • Immune System Health: Rather than just examining white blood cell count in isolation, a natural health professional may look at IgA levels, for example, to determine if chronic stress or food sensitivities might be impacting the immune system. This insight could guide them to recommend nutritional support, stress management techniques, or digestive healing strategies to support a balanced immune response.


Emphasis on Optimal Wellness, Not Just Disease Treatment

Someone looking at test tubes of blood.
Normal on Blood Tests Are Not the Same as OPTIMAL

Natural health professionals emphasize wellness as a continuum. By viewing lab numbers through this lens, they can identify potential imbalances long before they become diagnosable diseases. For instance:


  • Blood Sugar Management: While a traditional doctor may only act if fasting glucose or A1C levels reach prediabetic or diabetic thresholds, a natural health professional may begin discussing dietary changes, exercise, and stress management if levels are moderately high. This early intervention approach can empower clients to avoid chronic conditions.

  • Iron Saturation: Rather than only treating low iron once symptoms of anemia appear, a natural health professional might see slightly elevated iron levels as a sign of oxidative stress, which could be affecting organ function. Their recommendations may include antioxidants, hydration, or gentle detox strategies to prevent long-term health implications.


Or do you want to order new labs? You can order through KNH. Here's the best labs to order.

LABS: HORMONE & METABOLIC INSIGHT PANEL


  • Complete Blood Count with Differentials

  • Comprehensive Metabolic Panel

  • Lipid Panel

  • Vitamin D 25-OH, Total

  • Hemoglobin A1C (average blood glucose over the past 2-3 months)

  • Fasting Insulin (reflects current insulin levels)

  • C-Reactive Protein (CRP – inflammatory marker)

  • Full Thyroid Panel (TSH, Free T3, Free T4, TPO, and TG antibodies)

  • Anemia Panel


How Functional Lab Insight Fits Into Your Healing Journey


Understanding your lab results through a functional lens is a powerful step—but it works best when it’s part of a guided, whole-body healing process, not a one-time review.


Inside Unlock Your Hormonal Harmony: A Premium 4-Month SHAPE ReClaimed Journey, functional lab interpretation is woven into a comprehensive, personalized program that looks beyond “normal” and focuses on what your body needs to heal, rebalance, and thrive.


Rather than reviewing labs in isolation, we use them to:


  • Identify early imbalances before they become diagnoses

  • Understand patterns related to hormones, inflammation, metabolism, and stress

  • Connect lab markers with your symptoms, lifestyle, and health history

  • Create a clear, step-by-step plan for sustainable change


Lab insight is combined with in-depth consultations, urinalysis trends, body-composition data, nutrition, lifestyle guidance, and emotional support—so nothing is left to guesswork.


Ready to Go Deeper Than “Normal”?


Woman smiling at a desk with a laptop in a wellness office. Shelves of bottles in the background. Another person in the foreground.
Gwen Krehbiel, Founder of Krehbiel Natural Health and CNHP

If you’ve been told your labs are “normal” but you still don’t feel well, your next step is to begin with a Self-Sabotage Breakthrough Session.


This initial session is not a lab review. Instead, it is a focused conversation designed to:


  • Clarify your current symptoms and health history

  • Identify patterns that may be contributing to how you’re feeling

  • Determine whether functional lab analysis would be appropriate and helpful for you

  • Map out the most supportive next step—whether that includes labs, lifestyle support, or a comprehensive program


From there, existing or newly ordered labs can be thoughtfully integrated later—as part of a guided healing plan such as Unlock Your Hormonal Harmony: A Premium 4-Month SHAPE ReClaimed Journey, where functional lab insight is used in context, not isolation.


If you’re ready to stop guessing and start understanding what your body is communicating, this is the right place to begin.


👉 Schedule your Self-Sabotage Breakthrough Session today and take the first step toward root-cause clarity.









Medical disclaimer: This information is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Never disregard professional medical advice or delay seeking medical treatment. Medical conditions require medical care.

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Guest
Nov 12, 2024
Rated 5 out of 5 stars.

I've always been told my labs were ‘normal,’ but I still felt off. Gwen’s unique approach showed me that my numbers weren’t as optimal as I thought. She explained the functional ranges and helped me make changes I didn’t know I needed. I’m already feeling more balanced and energized!

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