A FAI (Free Androgen Index) test is a blood test that calculates a ratio to assess androgen levels, specifically testosterone.
Understanding the FAI Test
The Free Androgen Index (FAI) is not a direct measure of testosterone levels but rather a calculated value derived from a blood test. It helps determine if a person has an abnormal level of androgens, which are male hormones that include testosterone. Both men and women produce androgens.
Why is the FAI Test Important?
- Androgen Imbalance: The FAI test helps identify if an individual has too much or too little testosterone.
- Puberty Monitoring: During puberty, testosterone is crucial for the development of adults. FAI tests can help monitor levels during this period.
How is the FAI Calculated?
The FAI is derived from specific measurements from your blood test. It's not a reading straight from the blood, but a result of mathematical calculations.
Key Takeaways
| Aspect | Details |
|---|---|
| What it is | Ratio derived from blood test. |
| Purpose | Checks for abnormal levels of androgens, including testosterone. |
| Who has it | Both men and women produce androgens, making this test relevant for both. |
| Key Hormone | Testosterone. |
The FAI test offers a more insightful view into testosterone balance by factoring in other proteins in your blood, thus giving a better idea of bioavailable testosterone. It’s important to consult a healthcare professional to interpret the results correctly.
