Testosterone

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SI UNITS (recommended)

CONVENTIONAL UNITS

Calculate Clear all * The SI units is the recommended method of reporting clinical laboratory results Synonym 17β‑hydroxyandrostenone Units of measurement nmol/L, ng/mL, ng/dL, ng/100mL, ng%, ng/L, µg/L

The androgen testosterone (17β‑hydroxyandrostenone) has a molecular weight of 288 daltons. In men, testosterone is synthesized almost exclusively by the Leydig cells of the testes. The secretion of testosterone is regulated by luteinizing hormone (LH), and is subject to negative feedback via the pituitary and hypothalamus.

Testosterone promotes the development of the secondary sex characteristics in men and serves to maintain the function of the prostate and seminal vesicles. Most of the circulating testosterone is bound to carrier proteins (SHBG = sex hormone‑binding globulin). In women, small quantities of testosterone are formed in the ovaries. In physiological concentrations, androgens have no specific effects in women. Increased production of testosterone in women can cause virilization (depending on the increase).

Reference Intervals

Method: The electrochemiluminescence immunoassay “ECLIA”

Test subjects	ng/ml	ng/dL	nmol/L
Males 20-49 years	2.49-8.36	249-836	8.64-29.0
Males ≥ 50 years	1.93-7.40	193-740	6.68-25.7
Females 20-49 years	0.084-0.481	8.40-48.1	0.290-1.67
Females ≥ 50 years	0.029-0.408	2.90-40.8	0.101-1.42

SI units Conversion Calculator. Convert Testosterone level to nmol/L, ng/mL, ng/dL, ng/100mL, ng%, ng/L, µg/L. Clinical laboratory units online conversion from conventional or traditional units to Si units. Table of conversion factors for Testosterone unit conversion to nmol/L, ng/mL, ng/dL, ng/100mL, ng%, ng/L, µg/L.

Clinical chemistry Hormones and specific markers

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• 0-9

• 17-Hydroxyprogesterone
• Acetaminophen
• Acetoacetic acid (Acetoacetate)
• Acetone
• Acid phosphatase (ACP)
• Activated Partial Thromboplastin Time (APTT)
• Adrenocorticotropic hormone (ACTH)
• Alanine (Ala)
• Alanine Aminotransferase (ALT/SGPT)
• Albumin
• Alcohol Dehydrogenase (ADH)
• Aldolase
• Aldosterone
• Alkaline Phosphatase (ALP)
• alpha-1-Acid Glycoprotein
• alpha-1-Antitrypsin
• alpha-1‑microglobulin
• Alpha-fetoprotein (AFP)
• Ammonia (NH3)
• Amylase
• Amylase, Pancreatic
• Androstenedione
• Antibodies to thyroid peroxidase (Anti-TPO)
• Antibodies to TSH receptor (Anti-TSHR)
• Antibody to cyclic citrullinated peptide (anti-CCP)
• Antibody to thyroglobulin (anti-Tg)
• Antidiuretic Hormone (Vasopressin)
• Antistreptolysin-O (ASLO)
• Antithrombin III activity
• anti‐Mullerian hormone (AMH)
• Apolipoprotein A-1
• Apolipoprotein B
• Arginine (Arg)
• Asparagine (Asn)
• Aspartate Aminotransferase (AST/SGOT)
• Aspartic Acid (Asp)
• Basophils (Absolute basophil count)
• Basophils (BASO)
• beta - CrossLaps - Degradation products of type I collagen
• Beta 2‐microglobulin (β2‐M)
• beta-Hydroxybutyric acid
• Bicarbonate (HCO3-)
• Bilirubin, Direct
• Bilirubin, Total
• Biotin (Vitamin B7)
• C-Peptide
• C-Reactive protein (CRP)
• C3 complement factor
• C4 Complement factor
• CA 125 (Cancer Antigen 125)
• CA 15-3 (Cancer Antigen 15-3)
• CA 19-9 (Carbohydrate Antigen 19-9)
• CA 72-4 (Cancer antigen 72-4)
• Calcitonin
• Calcium (Ca)
• Carbamazepine
• Carcinoembryonic antigen (CEA)
• Ceruloplasmin
• Chloride (Cl)
• Cholesterol HDL - High Density Lipoprotein
• Cholesterol LDL - Low Density Lipoprotein
• Cholesterol Total
• Cholinesterase
• CK‐MB mass - the MB isoenzyme of creatine kinase (quantitative determination)
• Copper (Cu)
• Cortisol
• Creatine Kinase (CK)
• Creatine Kinase-MB (activity)
• Creatinine
• CYFRA 21-1
• Cystatin C
• Cysteine (Cys)
• Cystine
• D-Dimer
• Dehydroepiandrosterone-sulfate (DHEA-Sulfate)
• Digitoxin
• Digoxin
• Eosinophil cationic protein (ECP)
• Eosinophils (Absolute eosinophil count)
• Eosinophils (EOS)
• Erythropoietin (EPO)
• Estradiol (E2)
• Estriol Unconjugated (E3)
• Estrone (E1)
• Ethyl Alcohol (Ethanol)
• Ethylene Glycol
• Ferritin
• Fibrinogen
• Folate
• Folic acid (Vitamin B9)
• Follicle stimulating hormone (FSH)
• Free β-subunit of human chorionic gonadotropin (free βhCG)
• Fructosamine
• Fructose
• Galactose
• Gamma Glutamyltransferase (GGT)
• Gastrin
• Gentamicin
• Glucagon
• Glucose
• Glutamate dehydrogenase (GLDH)
• Glutamic Acid (Glu)
• Glutamine (Gln)
• Glycine (Gly)
• Growth Differentiation Factor‐15 (GDF‐15)
• Haptoglobin
• HE4 - Human epididymal protein 4
• Hematocrit (HCT)
• Hemoglobin (HGB)
• Hemoglobin monomer (subunit)
• Hemoglobin tetramer
• Histidine (His)
• Homocysteine (HCY)
• Human chorionic gonadotropin (hCG)
• Human growth hormone (hGH)
• IGF-1 - Insulin-like growth factor 1 (Somatomedin C)
• Immunoglobulin A (IgA)
• Immunoglobulin E (IgE)
• Immunoglobulin G (IgG)
• Immunoglobulin M (IgM)
• Insulin
• Insulin- like growth factor binding protein 3 (IGFBP-3)
• Interleukin‐6 (IL‐6)
• Iron (Fe)
• Iron Binding Capacity, Total (TIBC)
• Iron Binding Capacity,Unsaturated (UIBC)
• Isoleucine (Ile)
• Isopropanol
• Kappa (κ) light chain
• Lactate (Lactic Acid)
• Lactate Dehydrogenase (LDH)
• Lambda light chain
• Leucine (Leu)
• Lidocaine
• Lipase
• Lipopolysaccharide binding protein (LBP)
• Lipoprotein (a)
• Lithium (Li)
• Luteinizing hormone (LH)
• Lymphocytes (Absolute Lymphocyte Count)
• Lymphocytes (LYMPH)
• Lysine (Lys)
• Macroprolactin (big-big prolactin)
• Magnesium (Mg)
• MCH - Mean Corpuscular Hemoglobin
• MCHC - Mean Corpuscular Hemoglobin Concentration
• MCV - Mean Corpuscular Volume
• Methanol
• Methionine (Met)
• Monocytes (Absolute monocyte count)
• Monocytes (MONO)
• MPV - Mean Platelet Volume
• Myoglobin
• N1-Methylnicotinamide (Niacin Metabolites)
• Neuron - specific enolase (NSE)
• Neutrophils (Absolute Neutrophil Count)
• Neutrophils (NEUT)
• NT‐proBNP (N-terminal pro B-type natriuretic peptide)
• N‑acetylprocainamide (NAPA)
• Osteocalcin (OCN)
• P1NP total - Total procollagen type 1 amino-terminal propeptide
• Pantothenic Acid (Vitamin B5)
• Parathyroid hormone (PTH)
• Phenobarbital
• Phenylalanine (Phe)
• Phenytoin
• Phosphorus (P)
• Platelets (Thrombocytes)
• PlGF - Placental growth factor
• Potassium (K)
• Prealbumin
• Pregnancy-associated plasma protein A (PAPP-A)
• Procalcitonin (PCT)
• Progesterone
• ProGRP - Progastrin-releasing peptide
• Prolactin (PRL)
• Proline (Pro)
• Prostate - specific antigen (PSA)
• Prostate‑specific antigen free (Free PSA)
• Prothrombin Time (PT)
• Prothrombin Time Quick
• Pyrrolysine (Pyl)
• Red Blood Cell Distribution Width (RDW-CV)
• Red Blood Cell Distribution Width (RDW-SD)
• Red Blood Cells (RBC)
• Renin
• Retinol (Vitamin A1)
• Rheumatoid factor (RF)
• Riboflavin (Vitamin B2)
• S100
• Salicylate
• Selenocysteine (Sec)
• Serine (Ser)
• Serotonin
• Sex hormone‑binding globulin (SHBG)
• sFlt‐1 - Soluble fms‐like tyrosine kinase‐1
• Sodium (Na)
• Soluble Transferrin Receptor (sTfR)
• Squamous cell carcinoma (SCC)
• Testosterone
• Testosterone free
• Theophylline
• Threonine (Thr)
• Thrombin Time (TT)
• Thyroglobulin (Tg)
• Thyroid Uptake
• Thyroxine (total T4)
• Thyroxine free (FT4)
• Thyroxine-binding globulin (TBG)
• Tobramycin
• Total protein
• Transferrin
• Triglycerides
• Triiodothyronine (T3)
• Triiodothyronine free (FT3)
• Troponin I (TnI)
• Troponin T (TnT)
• Tryptophan (Trp)
• TSH - Thyroid‑stimulating hormone
• Tyrosine (Tyr)
• Urea
• Urea nitrogen (BUN)
• Uric Acid
• Valine (Val)
• Valproic Acid
• Vancomycin
• Vitamin B1 (Thiamine)
• Vitamin B12 (Cobalamin, Cyanocobalamin)
• Vitamin B3 (Niacin, Nicotinic acid)
• Vitamin B6 (Pyridoxal Phosphate)
• Vitamin C (Ascorbic Acid)
• Vitamin D total
• Vitamin D, 25-Hydroxyvitamin D (Calcidiol)
• Vitamin D3, 1,25-dihydroxyvitamin D (Calcitriol)
• Vitamin E (alpha-Tocopherol)
• Vitamin K (Phylloquinone)
• White Blood Cells (WBC)
• Zinc (Zn)