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CHICAGO – is one addition to the evaluation of men with suspected hypogonadism that is included in the revised clinical practice guideline on testosterone therapy in men with hypogonadism, issued March 17 by the Endocrine Society. The previous guideline was issued in 2010.
“Since 2010, the CDC has provided an accuracy-based standardization program for T (CDC Hormone Standardization Program for Testosterone). Although several commercial laboratories, some assay manufacturers, and some academic laboratories are now CDC certified, most T immunoassay kit manufacturers and local hospital-based laboratories have not been certified. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays for TT generally offer higher concentrations of specificity, sensitivity, and precision (especially in the low range) than do most immunoassays. Clinicians should ideally measure TT using a CDC-certified assay or an assay verified by an accuracy-based external quality control program,” according to the guideline.
Diagnosis, treatment, and follow-up of men with suspected hypogonadism often involve nuanced decisions, according to guideline panel chair Shalender Bhasin, MB, an endocrinologist who is professor of medicine at both Harvard Medical School and Brigham and Women’s Hospital, in Boston. The guideline will be published in its entirety in the May 2018 print issue of The Journal of Clinical Endocrinology & Metabolism.
Evaluation for suspected hypogonadism is indicated in men with symptoms and signs of testosterone deficiency – decreased libido, unexplained anemia, and/or osteopenia – and unequivocally and consistently low serum total testosterone and/or free testosterone concentrations, according to the guideline, which is co-sponsored by European Society of Endocrinology and endorsed by the European Academy of Andrology.
The guideline illuminates one area of diagnostic uncertainty that has dogged clinicians: Should one use age-specific testosterone levels? All the guideline authors speaking at the panel, in addition to Dr. Bhasin – Glenn R. Cunningham, MD, Baylor College of Medicine in Houston; Alvin M. Matsumoto, MD, VA Puget Sound Health Care System, Seattle; and Maria A. Yialamas, MD, Brigham and Women’s Hospital, Boston – agreed that age-specific testosterone levels do not improve diagnosis.
“The harmonized Reference range for TT in healthy, nonobese young men (aged 19 to 39 years) was 264 to 916 ng/dL (9.2 to 31.8 nmol/L) using the 2.5th and 97.5th percentile, and 303 to 852 ng/dL (10.5 to 29.5 nmol/L) using the 5th and 95th percentile (31). Clinicians can use this range for all CDC-certified TT assays,” according to the guideline.
Asking about history to explain low testosterone levels is an often overlooked part of patient evaluation. Two known causes of low testosterone in men often are not part of history taking but should be. One is use of opioids. The other is withdrawal from anabolic steroids. The best way to root these out in a history is to ask about any recent surgery and use of anabolic steroids, said Dr. Bhasin, speaking at the annual meeting of the Endocrine Society.
When it works, testosterone can make some men feel better: Testosterone replacement was associated with increased libido, erectile function, and sexual activity. However, testosterone replacement had no effect on energy and/or mood.
Not every man over the age of 65 with low testosterone is a candidate for testosterone replacement. There are some risks associated with its use; PSA may rise within 6 months of starting testosterone replacement, leaving physicians and men facing the issue of whether to have a prostate biopsy. The guideline recommends evaluating the patients with PSA the first time within 3-12 months after the start of therapy. When the test shows that PSA has risen, the decision of whether to have a prostate biopsy is one that should be shared by the patient and physician.
Dr. Bhasin declared financing from the National Institute on Aging, the National Institute of Nursing Research, the Patient-Centered Outcomes Research Institute, AbbVie, Metro International Biotechnology, Alivegen, Abbott, Transition Therapeutics, and Function Promoting Therapies.
skubetin@frontlinemedcom.com
SOURCE: ENDO 2018
CHICAGO – is one addition to the evaluation of men with suspected hypogonadism that is included in the revised clinical practice guideline on testosterone therapy in men with hypogonadism, issued March 17 by the Endocrine Society. The previous guideline was issued in 2010.
“Since 2010, the CDC has provided an accuracy-based standardization program for T (CDC Hormone Standardization Program for Testosterone). Although several commercial laboratories, some assay manufacturers, and some academic laboratories are now CDC certified, most T immunoassay kit manufacturers and local hospital-based laboratories have not been certified. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays for TT generally offer higher concentrations of specificity, sensitivity, and precision (especially in the low range) than do most immunoassays. Clinicians should ideally measure TT using a CDC-certified assay or an assay verified by an accuracy-based external quality control program,” according to the guideline.
Diagnosis, treatment, and follow-up of men with suspected hypogonadism often involve nuanced decisions, according to guideline panel chair Shalender Bhasin, MB, an endocrinologist who is professor of medicine at both Harvard Medical School and Brigham and Women’s Hospital, in Boston. The guideline will be published in its entirety in the May 2018 print issue of The Journal of Clinical Endocrinology & Metabolism.
Evaluation for suspected hypogonadism is indicated in men with symptoms and signs of testosterone deficiency – decreased libido, unexplained anemia, and/or osteopenia – and unequivocally and consistently low serum total testosterone and/or free testosterone concentrations, according to the guideline, which is co-sponsored by European Society of Endocrinology and endorsed by the European Academy of Andrology.
The guideline illuminates one area of diagnostic uncertainty that has dogged clinicians: Should one use age-specific testosterone levels? All the guideline authors speaking at the panel, in addition to Dr. Bhasin – Glenn R. Cunningham, MD, Baylor College of Medicine in Houston; Alvin M. Matsumoto, MD, VA Puget Sound Health Care System, Seattle; and Maria A. Yialamas, MD, Brigham and Women’s Hospital, Boston – agreed that age-specific testosterone levels do not improve diagnosis.
“The harmonized Reference range for TT in healthy, nonobese young men (aged 19 to 39 years) was 264 to 916 ng/dL (9.2 to 31.8 nmol/L) using the 2.5th and 97.5th percentile, and 303 to 852 ng/dL (10.5 to 29.5 nmol/L) using the 5th and 95th percentile (31). Clinicians can use this range for all CDC-certified TT assays,” according to the guideline.
Asking about history to explain low testosterone levels is an often overlooked part of patient evaluation. Two known causes of low testosterone in men often are not part of history taking but should be. One is use of opioids. The other is withdrawal from anabolic steroids. The best way to root these out in a history is to ask about any recent surgery and use of anabolic steroids, said Dr. Bhasin, speaking at the annual meeting of the Endocrine Society.
When it works, testosterone can make some men feel better: Testosterone replacement was associated with increased libido, erectile function, and sexual activity. However, testosterone replacement had no effect on energy and/or mood.
Not every man over the age of 65 with low testosterone is a candidate for testosterone replacement. There are some risks associated with its use; PSA may rise within 6 months of starting testosterone replacement, leaving physicians and men facing the issue of whether to have a prostate biopsy. The guideline recommends evaluating the patients with PSA the first time within 3-12 months after the start of therapy. When the test shows that PSA has risen, the decision of whether to have a prostate biopsy is one that should be shared by the patient and physician.
Dr. Bhasin declared financing from the National Institute on Aging, the National Institute of Nursing Research, the Patient-Centered Outcomes Research Institute, AbbVie, Metro International Biotechnology, Alivegen, Abbott, Transition Therapeutics, and Function Promoting Therapies.
skubetin@frontlinemedcom.com
SOURCE: ENDO 2018
CHICAGO – is one addition to the evaluation of men with suspected hypogonadism that is included in the revised clinical practice guideline on testosterone therapy in men with hypogonadism, issued March 17 by the Endocrine Society. The previous guideline was issued in 2010.
“Since 2010, the CDC has provided an accuracy-based standardization program for T (CDC Hormone Standardization Program for Testosterone). Although several commercial laboratories, some assay manufacturers, and some academic laboratories are now CDC certified, most T immunoassay kit manufacturers and local hospital-based laboratories have not been certified. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays for TT generally offer higher concentrations of specificity, sensitivity, and precision (especially in the low range) than do most immunoassays. Clinicians should ideally measure TT using a CDC-certified assay or an assay verified by an accuracy-based external quality control program,” according to the guideline.
Diagnosis, treatment, and follow-up of men with suspected hypogonadism often involve nuanced decisions, according to guideline panel chair Shalender Bhasin, MB, an endocrinologist who is professor of medicine at both Harvard Medical School and Brigham and Women’s Hospital, in Boston. The guideline will be published in its entirety in the May 2018 print issue of The Journal of Clinical Endocrinology & Metabolism.
Evaluation for suspected hypogonadism is indicated in men with symptoms and signs of testosterone deficiency – decreased libido, unexplained anemia, and/or osteopenia – and unequivocally and consistently low serum total testosterone and/or free testosterone concentrations, according to the guideline, which is co-sponsored by European Society of Endocrinology and endorsed by the European Academy of Andrology.
The guideline illuminates one area of diagnostic uncertainty that has dogged clinicians: Should one use age-specific testosterone levels? All the guideline authors speaking at the panel, in addition to Dr. Bhasin – Glenn R. Cunningham, MD, Baylor College of Medicine in Houston; Alvin M. Matsumoto, MD, VA Puget Sound Health Care System, Seattle; and Maria A. Yialamas, MD, Brigham and Women’s Hospital, Boston – agreed that age-specific testosterone levels do not improve diagnosis.
“The harmonized Reference range for TT in healthy, nonobese young men (aged 19 to 39 years) was 264 to 916 ng/dL (9.2 to 31.8 nmol/L) using the 2.5th and 97.5th percentile, and 303 to 852 ng/dL (10.5 to 29.5 nmol/L) using the 5th and 95th percentile (31). Clinicians can use this range for all CDC-certified TT assays,” according to the guideline.
Asking about history to explain low testosterone levels is an often overlooked part of patient evaluation. Two known causes of low testosterone in men often are not part of history taking but should be. One is use of opioids. The other is withdrawal from anabolic steroids. The best way to root these out in a history is to ask about any recent surgery and use of anabolic steroids, said Dr. Bhasin, speaking at the annual meeting of the Endocrine Society.
When it works, testosterone can make some men feel better: Testosterone replacement was associated with increased libido, erectile function, and sexual activity. However, testosterone replacement had no effect on energy and/or mood.
Not every man over the age of 65 with low testosterone is a candidate for testosterone replacement. There are some risks associated with its use; PSA may rise within 6 months of starting testosterone replacement, leaving physicians and men facing the issue of whether to have a prostate biopsy. The guideline recommends evaluating the patients with PSA the first time within 3-12 months after the start of therapy. When the test shows that PSA has risen, the decision of whether to have a prostate biopsy is one that should be shared by the patient and physician.
Dr. Bhasin declared financing from the National Institute on Aging, the National Institute of Nursing Research, the Patient-Centered Outcomes Research Institute, AbbVie, Metro International Biotechnology, Alivegen, Abbott, Transition Therapeutics, and Function Promoting Therapies.
skubetin@frontlinemedcom.com
SOURCE: ENDO 2018
REPORTING FROM ENDO 2018