Testosteronologist® Guidelines & Resources

Testosteronology Society® Diabetes Diagnosis and Management Guidelines

Clinical Guidelines for A1C, Glycemic Risk, and Diabetes Management

PUBLISHED: 6/27/2026

This clinician-focused resource provides a practical framework for evaluating HbA1C, blood glucose, insulin resistance, and diabetes-related risk in patients receiving testosterone or other androgen therapies. It addresses prediabetes, type 1 and type 2 diabetes, LADA, metabolic dysfunction, and other important causes of abnormal glucose regulation.

The guidelines also provide diagnostic considerations, recommended laboratory testing, treatment approaches, medication considerations, and clinical insights designed to support more informed decision-making when managing metabolic health alongside testosterone and androgen therapy.

Making "Safer Injecting" Matter for People who Inject Image and Performance Enhancing Drugs

PUBLISHED: 11/08/2025

This document is a concise, clinician-oriented summary of the published article by Dr. Piatkowski and Dr. O’Connor on safer injecting practices among people who use image and performance-enhancing drugs (IPEDs). Compiled by Omar, it reflects his interpretive and subjective synthesis of the study’s findings, themes, and implications. The summary highlights key insights from participant interviews, contextualizes harm-reduction challenges specific to IPED users, and distills practical considerations related to injection technique, sterility, and user-driven motivations. It is intended as an accessible companion to the original article and should be read as Omar’s personal viewpoint rather than an official representation of the authors’ conclusions. 

Testosteronology Society® Peptide Resource

PUBLISHED: 1/15/2026

Explore this  peptide resource for an evidence-based, clinician-focused review of commonly used peptides, including mechanisms, safety considerations, and what the literature actually supports. It compiles available animal data alongside the limited human evidence to help you quickly distinguish credible signals from speculation. Dosing and administration are intentionally excluded because standardized, validated protocols are not established for most of these products.

Testosterone Replacement Therapy

A Clinical Primer For Testosterone-Naive Male Patients

PUBLISHED: 10/15/2025

This clinical primer provides a structured, evidence-based approach to initiating and monitoring testosterone replacement therapy (TRT) in adult male patients who are completely testosterone-naive. It is designed for clinicians seeking practical, guideline-aligned direction on diagnosis, dosing, safety monitoring, and treatment optimization in straightforward cases of hypogonadism. The document intentionally focuses on uncomplicated clinical scenarios and does not address advanced management topics such as fertility preservation, prior anabolic-androgenic steroid use, or patients with complex endocrine, oncologic, or cardiometabolic comorbidities that require specialized care.

Donating Blood

Guidelines and Order Sample

PUBLISHED: 4/20/2025

This document summarizes the medications and clinical scenarios that commonly lead to deferral from donating blood through the American Red Cross in the context of managing androgen-induced erythrocytosis (AIE). It outlines why specific drug classes—including antibiotics for active infection, anticoagulants, isotretinoin, 5-alpha-reductase inhibitors, and HIV PrEP/ART—trigger temporary or permanent refusal and clarifies the associated safety or infectious-risk rationale behind each restriction. Patients taking these medications, or those who do not meet allogeneic eligibility criteria, will require a medical or therapeutic phlebotomy order rather than routine donation. A sample therapeutic phlebotomy order form, provided for clinician use, is included below.

Testosteronologist® Course

You must pass this course to become a Certified Testosteronologist®.

PUBLISHED: 2/27/2025

Welcome to The Testosteronology® Certified Androgen Specialist Course, a program meticulously crafted for healthcare providers that can prescribe testosterone in their state or country such as Nurse practitioners (NPs), Physician Assistants (PA), and physicians (MDs/DOs) seeking to augment their proficiency in sub-specialization.

The course, developed by Dr. Thomas O’Connor, a preeminent figure in Testosterone Replacement Therapy, Anabolic/Androgenic Steroid Harm Reduction Strategies and Internal Medicine, integrates his esteemed ABCD’S™ Philosophy with the structured framework of the Testosteronology® Training Guide.