Pancreatic Hormone Test Panel: Insulin, C-Peptide, Proinsulin, Glucagon, and Results
A pancreatic hormone test panel measures selected hormones made by islet cells, commonly insulin, C-peptide, proinsulin, and glucagon. These tests can help investigate documented...
Pancreatic Polypeptide Test: High Levels, Pancreatic Function, and Results
A pancreatic polypeptide test measures a 36-amino-acid hormone released mainly by specialized cells in the pancreas. Pancreatic polypeptide rises after eating, during exercise, and...
Proinsulin Blood Test: High Levels, Insulin Production, and Results
A proinsulin blood test measures the precursor molecule that pancreatic beta cells process into insulin and C-peptide. Healthy beta cells convert most proinsulin before...
Somatostatin Blood Test: High Levels, Pancreatic Hormone, and Results
A somatostatin blood test measures a hormone that acts as a broad inhibitor of endocrine and digestive activity. Somatostatin is produced by delta cells...
Vasoactive Intestinal Peptide (VIP) Test: High Levels, Diarrhea, and Results
A vasoactive intestinal peptide test measures VIP, a neuropeptide that relaxes smooth muscle and stimulates secretion of water and electrolytes into the intestine. The...
Androgen Deficiency Blood Test Panel: Testosterone, SHBG, LH, FSH, Symptoms, and Results
An androgen deficiency blood test panel looks beyond a single testosterone number. It combines total testosterone with sex hormone-binding globulin (SHBG), free or calculated...
Androstenedione Test in Men: High, Low, Adrenal, Testicular, and Results
An androstenedione test measures a steroid hormone made by both the adrenal glands and testes. Androstenedione is weaker than testosterone, but it is an...
Anti-Mullerian Hormone (AMH) Test in Men: Testicular Function and Results
An anti-Müllerian hormone (AMH) test in males mainly reflects Sertoli-cell activity in the testes. AMH is best known for its role in fetal male...
Bioavailable Testosterone Test: Low Levels, Normal Range, SHBG, and Results
A bioavailable testosterone test estimates the testosterone that is free or loosely bound to albumin and therefore more readily available to tissues. It excludes...
DHEA-S Test in Men: High, Low, Adrenal Androgens, and Results
A DHEA-S test measures dehydroepiandrosterone sulfate, the most abundant circulating adrenal androgen. In men, DHEA-S comes almost entirely from the adrenal glands, making it...
Dihydrotestosterone (DHT) Test: High, Low, Hair Loss, Prostate, and Results
A dihydrotestosterone (DHT) test measures a potent androgen made when the enzyme 5-alpha-reductase converts testosterone into DHT. The hormone is essential for fetal development...
Estradiol (E2) Test in Men: High, Low, Normal Range, and Hormone Balance
An estradiol (E2) test in men measures the most biologically active form of estrogen. Most male estradiol is created when aromatase converts testosterone into...
Follicle-Stimulating Hormone (FSH) Test in Men: Sperm Production, Fertility, and Results
A follicle-stimulating hormone (FSH) test in men helps assess pituitary signaling to the sperm-producing tissue of the testes. FSH acts on Sertoli cells, which...
Free Testosterone Test: Low Levels, Normal Range, SHBG, Symptoms, and Results
A free testosterone test estimates the small share of testosterone that is not tightly bound to sex hormone-binding globulin (SHBG). It can clarify hormone...
Gynecomastia Hormone Test Panel: Testosterone, Estradiol, LH, hCG, Prolactin, and Results
A gynecomastia hormone test panel helps investigate true glandular breast enlargement in a male, especially when it begins suddenly, is painful, occurs before or...
Hypogonadism Blood Test Panel: Total Testosterone, Free Testosterone, LH, FSH, Prolactin, and Results
A hypogonadism blood test panel checks whether a man has consistently low testosterone and helps locate the cause in the testes, pituitary, hypothalamus, hormone-binding...
Inhibin B Test in Men: Sperm Production, Testicular Function, and Results
An inhibin B test measures a hormone made mainly by Sertoli cells in the testes and provides indirect information about seminiferous tubule activity and...
Luteinizing Hormone (LH) Test in Men: Low Testosterone, Pituitary Function, and Results
A luteinizing hormone (LH) test in men measures the pituitary signal that tells Leydig cells in the testes to produce testosterone. Its main clinical...
Male Fertility Hormone Panel: FSH, LH, Testosterone, Prolactin, Inhibin B, and Results
A male fertility hormone panel evaluates the signals that support testosterone production and spermatogenesis. It commonly includes FSH, LH, total testosterone, prolactin, and sometimes...
Male Hormone Test Panel: Testosterone, Free Testosterone, SHBG, LH, FSH, Prolactin, and Results
A male hormone test panel combines total testosterone, free testosterone, SHBG, LH, FSH, and prolactin to evaluate androgen status and the pituitary–testicular axis. It...