Your T3 Free Level

What Causes Abnormal T3 Free Levels?

Abnormal T3 free levels can have various causes, just like most other symptoms.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

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Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose abnormal T3 free levels, we could:

  • Research the topic
  • Find a doctor with the time
  • Use a diagnostic computer system.
The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "abnormal T3 free levels" as a symptom.  Here are two possibilities:
  • Hyperthyroidism
  • Hypothyroidism

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:
depression with anxiety
having elevated TT4 level
constant fatigue
very great unexplained weight gain
having low TT4 level
history of frequent dieting
inner trembling
slow reaction time
slowed pulse rate
elevated free T4
numb/burning/tingling extremities
severe vision disturbances
... and more than 60 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of abnormal T3 free levels:
Cause Probability Status
Hypothyroidism 90% Confirm
Hyperthyroidism 66% Possible
* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

If you indicate having had recent lab tests, The Analyst™ will ask further questions including this one:
T3 (Free). Unit: pg/mL [pmol/L]
Possible responses:
→ Don't know
→ Under 1.4 [0.021] (very low)
→ 1.4 to 2.0 [0.021-0.031] (low)
→ 2.1 to 4.4 [0.032-0.068] (normal)
→ Over 4.4 [0.068] (elevated)
Based on your response to this question, which may indicate low T3 free level, normal T3 free level or high T3 free level, The Analyst™ will consider possibilities such as:
... and also rule out issues such as:
Concerned or curious about your health?  Try The Analyst™
Symptom Entry
Symptom Entry
Full Explanations
Optional Doctor Review
Review (optional)
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