Pregnenolone
Measures pregnenolone levels to assess hormone production, adrenal function, and neurosteroid balance in the body.
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What this test measures
Pregnenolone, often called the "mother of all hormones," is a steroid hormone that serves as a precursor to other steroid hormones, including cortisol, estrogen, progesterone, and testosterone. This steroid hormone precursor is synthesized from cholesterol and is primarily produced in the gonads (ovaries and testes), adrenal glands, and brain. Testing pregnenolone levels provides valuable insight into the body's overall steroid hormone production capacity and adrenal gland function.
Pregnenolone functions as a neurosteroid that influences cognitive function, mood, stress response, and hormonal balance. It has anti-inflammatory and neuroprotective properties that may enhance cognitive functioning, including learning and memory, regulate mood, and influence the immune system. The test measures pregnenolone concentrations in the blood, typically using advanced mass spectrometry techniques for accuracy and precision.
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Individuals experiencing unexplained fatigue, decreased energy levels, or persistent weakness that may indicate adrenal insufficiency or hormone imbalances.
- Those with cognitive concerns such as memory problems, difficulty concentrating, or mental fog that could be related to declining neurosteroid levels.
- People with symptoms suggestive of hormone deficiencies, including low libido, mood changes, sleep disturbances, or irregular menstrual cycles.
- Individuals with suspected congenital adrenal hyperplasia (CAH) or other adrenal disorders, particularly when other hormone tests have been inconclusive.
- Those considering hormone replacement therapy or supplement regimens who want to assess their baseline steroid hormone production capacity before treatment begins.
What to expect
Preparation
No special fasting is required for pregnenolone testing. Patients should inform their healthcare provider about any steroid medications, hormone supplements, or birth control pills, as these may affect test results. The timing of sample collection may be specified for optimal interpretation.
Sample Type
A healthcare professional will collect a blood sample through a standard venipuncture procedure, typically from a vein in the arm. The sample requires special handling and must be separated from blood cells promptly to ensure accurate results.
Collection
The blood draw is quick and straightforward, taking only a few minutes. The specimen must be processed and frozen immediately to maintain hormone stability. Some laboratories may require specific collection tubes without gel separators for optimal testing accuracy.
Turnaround
Results are typically available within 2 to 5 business days after the laboratory receives the sample. The processing time may vary depending on the specific testing methodology and laboratory workload.
Understanding your results
Generally, normal serum pregnenolone levels range from 22-237 ng/dL, though these ranges can differ depending on the laboratory and testing method used. Pregnenolone is typically measured and interpreted alongside other hormone levels to provide a better understanding of hormonal profile.
| Population | Reference Range | Notes |
|---|---|---|
| Adults | 22-237 ng/dL | Reference ranges may vary by laboratory and methodology. Some sources suggest optimal levels of 125-175 ng/dL for optimal health. |
Reference ranges may vary by laboratory and individual factors. Results should be interpreted by a healthcare provider in the context of your overall health.
What does a “Low” result mean?
Low pregnenolone levels may occur naturally with aging, as natural declines occur with age. Chronic stress may also deplete pregnenolone levels. Low levels in individuals can be associated with various health issues, including adrenal insufficiency, hypopituitarism, and chronic stress, which can lead to fatigue, mood disorders, and cognitive difficulties. Additional factors that may contribute to decreased levels include certain medications, severe illness, or impaired adrenal gland function.
What does a “High” result mean?
High pregnenolone levels may be caused by congenital adrenal hyperplasia (CAH), an inherited condition where enzyme deficiencies prevent pregnenolone from being converted into steroid hormones. This can cause deficiency of cortisol and an overabundance of male hormones. Elevated levels might also indicate adrenal tumors or hyperplasia. Additional causes may include certain medications, stress conditions, or other endocrine disorders affecting steroid hormone metabolism.
Privacy & confidentiality
Your pregnenolone test results are completely confidential and protected under HIPAA regulations. Results are not shared with your personal physician unless you specifically request it, not added to your permanent medical records, and will not appear on insurance explanation of benefits statements.
Frequently asked questions
Related tests
Cortisol
$79Downstream hormone from pregnenolone; helps assess adrenal function
View TestDHEA-Sulfate
$49Another key hormone derived from pregnenolone in the steroidogenesis pathway
View TestTestosterone
$69End product of pregnenolone conversion; useful for comprehensive hormone evaluation
View TestProgesterone
$49Direct downstream product of pregnenolone via the delta-4 pathway
View TestRelated conditions
CPT Code: 84140
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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