Clinical guidelines for treatment of hypogonadism with testosterone therapy
Several international medical societies have issued recommendations on the diagnosis, treatment and monitoring of men with hypogonadism, also known as testosterone deficiency:
The main points from the guidelines for the clinician to consider are summarised below.
Diagnosis of hypogonadism
Guidelines mandate that the diagnosis of hypogonadism is made based on typical symptoms and/or signs combined with a low testosterone level. While there is no universal diagnostic threshold for what should be counted as a low testosterone level, several guidelines recommend <12.1 nmol/L (<350 ng/dL) as a landmark. Because of inter-individual differences in androgen receptor sensitivity, some men can suffer from hypogonadism symptoms/signs despite having “normal” testosterone level. In these patients, a therapeutic trial of testosterone therapy for 12 months may be recommended. Due to less sensitive androgen receptors, these patients may require higher on-treatment testosterone levels in order to achieve symptomatic relief and metabolic benefits.
Contraindications to testosterone therapy
The goal of testosterone therapy
The aim of testosterone therapy is to restore testosterone levels to a point that results in resolution of symptoms; hence, symptom resolution is a critical indicator of testosterone therapy efficacy.4,12-14 While there is no single optimal target serum testosterone level, clinical guidelines recommend a therapeutic target in the mid to upper part of the reference range.1 The absolute values corresponding to the mid to upper part of the reference range vary among assays and laboratories, but an approximation is 15-30 nmol/L or 433-865 ng/dL.1 Failure to improve clinical symptoms within a reasonable period of time should result in reevaluation of testosterone therapy with regard to dosage, compliance and achieved testosterone level.13 For more information, see “Testosterone Therapy Practical Advice”
On-treatment monitoring of patients who receive testosterone therapy
For men with hypogonadism who do not have any contraindications, after initiation of testosterone therapy it is recommended to evaluate patients at 3, 6 and 12 months, and then annually thereafter.
- Monitoring of testosterone levels.
- Confirmation of symptomatic improvement.
- Checking for any changes in hematocrit, PSA and digital rectal examination.
Monitoring of serum testosterone levels
Measure testosterone levels at 3, 6 and 12 months and then annually after starting testosterone therapy. The dose of testosterone therapy should be adjusted to achieve a total testosterone level in the mid to upper normal range. This commonly corresponds to testosterone levels in the range of 15-30 nmol/L or 433-865 ng/dL.6 However, it should be noted that exact values for mid to upper normal range can vary greatly between testosterone lab assays. Due to inter-individual differences in androgen receptor sensitivity, some men may need to reach higher physiological testosterone levels in order achieve symptomatic relief.
Monitoring of symptomatic improvement
It is critical to keep in mind that maximal benefits of testosterone therapy are seen after 12 months.1 For instance, AMS scores can continue to progressively improve for 2 years and erectile function can continue to progressively improve for up to 9 years with uninterrupted testosterone therapy.15 Maximal improvements in obesity parameters (BMI and waist circumference), glycemic control, lipid profile and bone mineral density also take many years of uninterrupted testosterone therapy to be achieved.15-18 Failure to achieve symptomatic relief in a patient can be an indication that the patient has less sensitive androgen receptors, and may hence require higher testosterone levels to achieve health benefits. These patients may need a larger dose of testosterone therapy and higher target testosterone levels in the high end of the normal range. The vast majority of men who receive effective long-term testosterone therapy will experience symptomatic relief. While symptomatic relief is the primary aim of testosterone therapy, effective treatment will provide a wide range of benefits, such as increased muscle mass and bone mineral density, reduced body fat mass and improved glucose control and lipid profile.15-19 Monitoring and seeing improvements in these objective outcomes during testosterone therapy can help motivate patients to adhere to treatment.
Monitoring of hematocrit
Regular therapeutic phlebotomy may help keep hematocrit below 54%. If not, reduced dose of testosterone therapy is recommended. If hematocrit remains 54%, temporary withholding of testosterone therapy may be necessary until hematocrit returns to below 54%. Testosterone therapy may then be reintroduced at a decreased dose, or a change of testosterone preparation may be advisable. It should be pointed out that the risk of hematocrit elevation is much lower with Nebido® (long-acting testosterone undecanoate injections) than other testosterone preparations. For more information, see our detailed report “Hematocrit elevation following testosterone therapy – does it increase risk of blood clots?”
Monitoring of PSA and DRE (Digital Rectal Examination)
PSA increases greater than 1.4 ng/mL during any 1-year period after initiation of testosterone therapy or a PSA velocity greater than 0.4 ng/mL per year during sequential PSA measurements over more than 2 years warrant a urologic evaluation and more intensive surveillance for prostate cancer thereafter.1 Men with BPH can be prescribed testosterone therapy; these men can actually experience alleviation of LUTS with long-term testosterone therapy.3,22,23
Monitoring of body weight, waist circumference, lipids and glycemic control
Monitoring of body weight, waist circumference, lipids and glycemia is not required for safety follow-up, but is useful for monitoring the efficacy of testosterone treatment.1,2 Several long-term “real life” studies in men with overweight and obesity have shown that testosterone therapy significantly reduces body weight, waist circumference and HbA1c, and improves the lipid profile.17,24-28 Seeing improvement in these parameters can be a motivating factor for patients to adhere to testosterone therapy.
Monitoring of bone mineral density
- Hackett G, Kirby M, Edwards D, et al. British Society for Sexual Medicine Guidelines on Adult Testosterone Deficiency, With Statements for UK Practice. The journal of sexual medicine. 2017;14(12):1504-1523. Return to content
- Salonia A, Bettocchi C, Carvalho J. EAU Guidelines on Sexual and Reproductive Health. 2020. Return to content
- Khera M, Adaikan G, Buvat J, et al. Diagnosis and Treatment of Testosterone Deficiency: Recommendations From the Fourth International Consultation for Sexual Medicine (ICSM 2015). The journal of sexual medicine. 2016;13(12):1787-1804. Return to content
- Morgentaler A, Traish A, Hackett G, Jones TH, Ramasamy R. Diagnosis and Treatment of Testosterone Deficiency: Updated Recommendations From the Lisbon 2018 International Consultation for Sexual Medicine. Sex Med Rev. 2019;7(4):636-649. Return to content
- Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline. J Urol. 2018;200(2):423-432. Return to content
- Bhasin S, Brito JP, Cunningham GR, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(5):1715-1744. Return to content
- Dean JD, McMahon CG, Guay AT, et al. The International Society for Sexual Medicine's Process of Care for the Assessment and Management of Testosterone Deficiency in Adult Men. The journal of sexual medicine. 2015;12(8):1660-1686. Return to content
- Morales A, Bebb RA, Manjoo P, et al. Diagnosis and management of testosterone deficiency syndrome in men: clinical practice guideline. CMAJ. 2015;187(18):1369-1377. Return to content
- Morgentaler A, Caliber M. Safety of testosterone therapy in men with prostate cancer. Expert opinion on drug safety. 2019;18(11):1065-1076. Return to content
- Saad F, Doros G, Haider KS, Haider A. Hypogonadal men with moderate-to-severe lower urinary tract symptoms have a more severe cardiometabolic risk profile and benefit more from testosterone therapy than men with mild lower urinary tract symptoms. Investig Clin Urol. 2018;59(6):399-409. Return to content
- Traish AM, Johansen V. Impact of Testosterone Deficiency and Testosterone Therapy on Lower Urinary Tract Symptoms in Men with Metabolic Syndrome. The world journal of men's health. 2018;36(3):199-222. Return to content
- Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline (unabridged). J Urol. 2018;200(2):423-432. Return to content
- Lunenfeld B, Mskhalaya G, Zitzmann M, et al. Recommendations on the diagnosis, treatment and monitoring of hypogonadism in men. The aging male : the official journal of the International Society for the Study of the Aging Male. 2015;18(1):5-15. Return to content
- Hackett GI. Controversies in the diagnosis and management of testosterone deficiency syndrome. CMAJ. 2015;187(18):1342-1344. Return to content
- Saad F, Caliber M, Doros G, Haider KS, Haider A. Long-term treatment with testosterone undecanoate injections in men with hypogonadism alleviates erectile dysfunction and reduces risk of major adverse cardiovascular events, prostate cancer, and mortality. The aging male : the official journal of the International Society for the Study of the Aging Male. 2020;23(1):81-92. Return to content
- Saad F, Doros G, Haider KS, Haider A. Differential effects of 11 years of long-term injectable testosterone undecanoate therapy on anthropometric and metabolic parameters in hypogonadal men with normal weight, overweight and obesity in comparison with untreated controls: real-world data from a controlled registry study. Int J Obes. 2020;44(6): 1264-1278. Return to content
- Yassin A, Haider A, Haider KS, et al. Testosterone Therapy in Men With Hypogonadism Prevents Progression From Prediabetes to Type 2 Diabetes: Eight-Year Data From a Registry Study. Diabetes Care. 2019;6(42):1104-1111. Return to content
- Haider A, Meergans U, Traish A, et al. Progressive Improvement of T-Scores in Men with Osteoporosis and Subnormal Serum Testosterone Levels upon Treatment with Testosterone over Six Years. International journal of endocrinology. 2014;2014:496948. Return to content
- Corona G, Giagulli VA, Maseroli E, et al. Testosterone supplementation and body composition: results from a meta-analysis study. Eur J Endocrinol. 2016;174(3):R99-116. Return to content
- König CS, Balabani S, Hackett GI, Strange RC, Ramachandran S. Testosterone Therapy: An Assessment of the Clinical Consequences of Changes in Hematocrit and Blood Flow Characteristics. Sex Med Rev. 2019;7(4):650-660. Return to content
- Saad F, Aversa A, Isidori AM, Zafalon L, Zitzmann M, Gooren L. Onset of effects of testosterone treatment and time span until maximum effects are achieved. Eur J Endocrinol. 2011;165(5):675-685. Return to content
- Morgentaler A, Traish A, Hackett G, Jones TH, Ramasamy R. Diagnosis and Treatment of Testosterone Deficiency: Updated Recommendations From the Lisbon 2018 International Consultation for Sexual Medicine. Sex Med Rev. 2019. Return to content
- Haider KS, Haider A, Doros G, Traish A. Long-Term Testosterone Therapy Improves Urinary and Sexual Function, and Quality of Life in Men with Hypogonadism: Results from a Propensity Matched Subgroup of a Controlled Registry Study. J Urol. 2018;199(1):257-265. Return to content
- Saad F, Caliber M, Doros G, Haider KS, Haider A. Long-term treatment with testosterone undecanoate injections in men with hypogonadism alleviates erectile dysfunction and reduces risk of major adverse cardiovascular events, prostate cancer, and mortality. The aging male : the official journal of the International Society for the Study of the Aging Male. 2019:1-12. Return to content
- Traish AM, Haider A, Haider KS, Doros G, Saad F. Long-Term Testosterone Therapy Improves Cardiometabolic Function and Reduces Risk of Cardiovascular Disease in Men with Hypogonadism: A Real-Life Observational Registry Study Setting Comparing Treated and Untreated (Control) Groups. J Cardiovasc Pharmacol Ther. 2017;22(5):414-433. Return to content
- Saad F, Yassin D, Dorsos G, Yassin A. Most hypogonadal men with type 2 diabetes mellitus (T2DM) achieve HbA1c targets when treated with testosterone undecanoate injections (TU) for up to 12 years. Diabetes. 2017;66(Suppl.1):A305 (abstract). Return to content
- Yassin AA, Nettleship J, Almehmadi Y, Salman M, Saad F. Effects of continuous long-term testosterone therapy (TTh) on anthropometric, endocrine and metabolic parameters for up to 10 years in 115 hypogonadal elderly men: real-life experience from an observational registry study. Andrologia. 2016;48(7):793-799. Return to content
- Saad F, Yassin A, Doros G, Haider A. Effects of long-term treatment with testosterone on weight and waist size in 411 hypogonadal men with obesity classes I-III: observational data from two registry studies. Int J Obes (Lond). 2016;40(1):162-170. Return to content