Why All Thyroid Function Tests Suck?

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I hate to be the bearer of bad news. But if I don’t tell you, then no one else will. Often times you look to your doctor for answers and you’ve been raised to believe that your doctors knows exactly what is going on with your health and exactly what to do about it.

 

But, I’m here to tell you that your doctor and the medical profession in general is more confused than ever regarding hypothyroidism, healthy thyroid function, and thyroid testing.

 

For what it’s worth, it’s not entirely your doctor’s fault.

 

Your doctor is really only as good as the thyroid function tests or tools he has available to diagnose you with. And, the TRUTH is that there really is NO perfect test for hypothyroidism.

 

Don’t get me wrong!

 

The hypothyroidism testing that takes place today is really abysmal. There is so much more the medical profession could be doing to improve their practices but they simply don’t for a number of social and economic reasons. Unfortunately today, improvements in medical science and testing are only considered if they can generate more profit.

 

All thyroid tests have their pluses and minuses, which can be expected. But today we’re so far off the mark when it comes to testing and diagnosing hypothyroidism that it really brings into question whose best interests are at mind here?

 

Bad Tests for Thyroid Function

 

The issue of thyroid function testing has been a hot debate for more than a century. If we can learn anything from history (which we rarely do) we should learn that thyroid tests come and go with the wind.

 

There have been a number of previous tests that have been “accepted” and used as the gold standard in diagnosing hypothyroid for years or decades only to eventually be discredited and deemed useless.

 

So, it’s important to take our current methods of thyroid function testing with a grain of salt because it’s likely that they too will follow suit at some point in time and be deemed unreliable.

 

Below are some of the commonly used hypothyroidism testing methods and why they are unreliable.

 

  1. TSH (Thyroid Stimulating Hormone) Testing

 

Odds are, if you’ve been diagnosed as hypothyroid by your doctor then you’ve had your TSH levels measured and they have likely been above “normal” (at least their interpretation of normal that is).

 

This is currently the standard test that medical doctors use to diagnose hypothyroidism. And it’s the ONLY test they typically run.

 

If you’re not familiar with human physiology, TSH is a hormone that tells the thyroid gland that more thyroid hormone is needed and to release more thyroid hormone into your bloodstream.

 

So, if TSH is high then this is thought to mean that your thyroid gland is not able to produce adequate thyroid hormone, thus you must be hypothyroid.

 

Extraneous Influences on TSH

 

One of the biggest problems with TSH testing is that it can be influenced by a number of extraneous factors unrelated to the direct function or health of the thyroid gland including:

 

  • Aging
  • Stress
  • Infection
  • Blood Sugar
  • Excessive T4

 

It’s important to understand that any thyroid function test is merely giving you a snapshot of your hormone levels at one single moment in time. And any factor, including the list above, can cause an immediate or drastic change in your hormone levels.

 

So, let’s say you’re under a considerable amount of stress, you’ve caught a cold, or you didn’t have time to eat before your doctor’s appointment… these variables can affect the outcome of your test.

 

It’s also important to note that doctors typically prescribe T4 only medications like Synthroid, which can easily lower TSH without actually improving your thyroid function.

 

Illogical Reference Ranges

 

 

Any lab test is only as accurate to the degree that its reference ranges are accurate. And there is a lot of evidence surrounding the illogical reference ranges that have been established for TSH.

 

The original TSH reference ranges were based on the results of the Protein Bound Iodine test, which was one of the many tests that were deemed unreliable. Basing TSH reference ranges on a test that was proven to be unreliable makes the results of the TSH test… unreliable at best!

 

Watch this Video – Why TSH is the wrong test for Thyroid Function.

 

  1. Free T3 Testing

 

Triiodothyronine (a.k.a. T3) is typically referred to as the “active” thyroid hormone because it is far more metabolically active in your cells than T4, or the “inactive” thyroid hormone. Because of this, we know that T3 is the primary thyroid hormone that your cells use to produce energy.

 

When thyroid hormone exists in the bloodstream, it relies on carrier proteins to move it within your bloodstream and delivery it to your cells where it is used to produce energy.

 

One of the biggest arguments today regarding hypothyroidism is that of the Free Hormone Hypothesis. This hypothesis speculates that only “free” or non-bound T3 thyroid hormone can enter your cells and produce energy and that any T3 that is bound to a carrier protein is unavailable to your cells.

 

However, there have been many studies that have disproven this theory and demonstrated that bound hormones can enter not only cells, but cell mitochondria and cell nuclei.

 

This pretty much deflates the entire idea that only “free” T3 can be used by your cells.

 

Since free T3 accounts for less than five percent of your total T3, testing for free T3 is practically useless for diagnosing hypothyroidism.

 

  1. Basal Metabolic Rate Tests

 

BMR (Basal Metabolic Rate) Tests were extensively used in the early to mid-1900’s before blood tests were developed. This same BMR test is still being used today and is becoming more and more popular in recent years.

 

The BMR test works by precisely measuring the amount of oxygen that you consume when your body is basal, or completely at rest. Your rate of oxygen consumption can then be used to determine your metabolism and therefore thyroid function.

 

However, there are a number of factors that make this test unreliable.

 

For starters, it requires that your body be in a completely basal state which is practically impossible with this method of testing. The only time your body is truly in a basal state is when you first open your eyes in the morning and before you start moving and get out of bed.

 

By the time you wake up, get dressed, drive through traffic to your doctor’s office, check in, etc., your body is no longer in a truly basal state.

 

So, how accurate can measuring your “basal” metabolism be if you’re not even in a basal state?

 

In order to make this test truly relevant, you would have to have your doctor come to your home while you sleep, and then administer the test upon waking.

 

Even in this scenario, the idea of having your doctor in your home and putting some sort of mask over your mouth upon waking would elicit enough of a stress response to alter the test results.

 

  1. Thyroid Blood Tests

 

There are a number of blood tests available for measuring various factors related to the thyroid hormone pathway including TSH, T4, T3, reverse T3, T3 Resin Uptake, Thyroglobulin, etc.

 

If you understand the physiology and roles that all of these play within the human body, then you can begin to gain some insight into what the potential problems are that are disrupting your thyroid.

 

However, they do not answer the one single question that continues to elude medicine even today, which is how much thyroid hormones are actually getting to and being used by your cells.

 

There are a number of physiological and dietary factors that can stop thyroid hormone from actually being used by your cells. Thyroid hormone can be blocked in your bloodstream and it can be blocked at the cellular level.

 

There is No Perfect Thyroid Function Test

 

You MUST understand that you can take all of the thyroid hormone you want, you can run labs showing you have more than enough thyroid hormone in your blood, but if that thyroid hormone is not being used by your cells then you are still hypothyroid.

 

The perfect test for thyroid function would be to directly measure the amount of thyroid hormone being utilized by every cell of your body. But with billions of cells, this is easier said than done.

 

I think it’s safe to say that we’re not going to see any “perfect” thyroid test any time soon.

 

What Is the Best Option for Thyroid Function Testing Then?

 

We’ve already established that measuring various levels of hormones in your blood can provide some useful insight, but fails to tell you the most important thing you need to know, which is how much thyroid hormone your cells are actually using.

 

Today, this can only truly be estimated through measuring your Basal Metabolic Rate, which has been problematic because it’s impossible to walk into your doctor’s office in a truly basal condition.

 

Believe it, or not, there is a simple and highly effective thyroid test that can measure your thyroid function in a truly basal state.

 

By simply taking your temperature upon waking, you can quite reliably determine if your thyroid is able to keep up with the metabolic demands of your body, or if you truly are hypothyroid.

 

This is exactly how I work with my clients. We don’t rely on misguiding thyroid function tests. We use basal temperature and pulse as well as temperature and pulse throughout the day to determine the metabolic state of the body.

 

By knowing this information, you can begin to use your diet therapeutically to supply your thyroid and cells with the nutrients they need to keep them running in their optimal state, which is essential for the body and thyroid to heal.

 

Watch this Video Here – How to Test Your Thyroid – Simple Self-Test

 

Author Bio:

 

Tom Brimeyer – The author of Hypothyroidism Revolution – is a practitioner of functional medicine, health researcher and author on nutrition, hormones and hypothyroidism.

 

His personal mission is to inspire and educate people to take control and achieve true health by correcting their hypothyroidism and underlying causes of their health problems instead of being stuck relying on doctors and drugs that merely cover up their symptoms while their health continues to suffer.

 

For more details on his program, click on HypothyroidismRevolution.com

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