Understanding the DHT (Dihydrotestosterone) Test
What It Is: The DHT (Dihydrotestosterone) test measures the level of dihydrotestosterone in your blood. DHT is a potent androgen hormone derived from testosterone and plays a crucial role in the development of male characteristics and reproductive functions. It is also involved in certain health conditions, such as male pattern baldness and prostate issues.
Why It's Important: DHT is a key hormone in the body, particularly for males. It influences various physiological processes, including:
Development of Male Characteristics: DHT is responsible for the development of male characteristics such as facial hair, body hair, and deepening of the voice during puberty.
Prostate Health: DHT plays a role in the growth and function of the prostate gland. Elevated levels of DHT can lead to conditions like benign prostatic hyperplasia (BPH) and prostate cancer.
Hair Growth: DHT is linked to male pattern baldness (androgenic alopecia). High levels of DHT can cause hair follicles to shrink, leading to hair loss.
How the DHT Test Works:
Sample Collection: A healthcare professional collects a blood sample from a vein in your arm.
Laboratory Analysis: The blood sample is processed in a lab where the level of DHT is measured.
Interpreting the Results:
Normal Range: The normal range for DHT levels can vary depending on the laboratory and the individual's age and sex. Generally, normal levels for adult males are between 30-85 nanograms per deciliter (ng/dL).
High Levels: Elevated DHT levels can indicate conditions such as benign prostatic hyperplasia (BPH), prostate cancer, and male pattern baldness.
Low Levels: Low DHT levels can be associated with conditions like hypogonadism (reduced function of the gonads) and certain genetic disorders.
Why Your Doctor Might Order This Test:
Diagnosing Hair Loss: To determine if high DHT levels are contributing to male pattern baldness.
Evaluating Prostate Health: To assess the role of DHT in prostate conditions such as BPH and prostate cancer.
Assessing Hormonal Imbalance: To evaluate hormonal imbalances that may affect sexual development and reproductive health.
Symptoms That Might Prompt This Test:
Hair loss or thinning
Enlarged prostate or urinary symptoms
Symptoms of hormonal imbalance, such as reduced libido or erectile dysfunction