Testosterone Therapy Recommendation for a 63-Year-Old Man
Only consider testosterone therapy if this man has documented sexual dysfunction (low libido, erectile dysfunction) that he wants to improve, combined with consistently low morning testosterone levels on two separate occasions. 1
When NOT to Prescribe Testosterone
Do not prescribe testosterone to improve energy, vitality, physical function, or cognition — the evidence does not support benefit for these indications, and this is explicitly recommended against by the American College of Physicians 1. This is a critical pitfall, as many men request testosterone for these nonspecific symptoms.
Evaluation Algorithm
Step 1: Symptom Assessment
Focus specifically on:
- Sexual symptoms: decreased libido, erectile dysfunction, reduced spontaneous erections
- Duration and severity of symptoms
- Impact on quality of life
Step 2: Laboratory Confirmation
- Measure fasting morning total testosterone on two separate days
- If borderline or factors affecting SHBG present, also measure calculated free testosterone
- Both samples must show unequivocally low levels (total testosterone <320 ng/dL or <11.1 nmol/L) 1
Step 3: Exclude Contraindications
Testosterone is absolutely contraindicated in 2, 3:
- Metastatic prostate or breast cancer
- Severe lower urinary tract symptoms (without prior urology evaluation)
- Recent major cardiovascular event
- Uncontrolled heart failure
- Severe untreated sleep apnea
- Erythrocytosis or thrombophilia
Step 4: Prostate Cancer Risk Assessment
For men 55-69 years in excellent health with >10-year life expectancy:
- Perform baseline PSA and digital rectal exam
- Start at age 40 for African Americans or those with first-degree relative with prostate cancer
- Engage in shared decision-making about screening risks/benefits 2
Treatment Approach (If Indicated)
Formulation Selection
Prefer intramuscular testosterone over transdermal formulations — clinical effectiveness and safety are similar, but intramuscular is considerably less expensive 1. The FDA-approved dosing is 50-400 mg every 2-4 weeks 3.
Mandatory Discussion Points Before Starting
Explicitly discuss 1:
- Potential benefits (primarily sexual function improvement)
- Potential harms (cardiovascular events, prostate concerns, erythrocytosis)
- Costs
- Lack of benefit for energy, cognition, or physical function
- Need for ongoing monitoring
Monitoring Protocol
Reassess at 12 months 1:
- If no improvement in sexual function → discontinue testosterone
- If improved, continue with periodic reassessment
- Monitor hematocrit, PSA, and metabolic parameters every 6-12 months 2, 4
Critical Caveats
The evidence supporting testosterone therapy even for sexual dysfunction is low-certainty 1. The Endocrine Society suggests an even more conservative approach for men ≥65 years, recommending against routine prescription and only offering therapy on an individualized basis after explicit risk-benefit discussion 2.
Testosterone will suppress spermatogenesis — this matters if fertility is a consideration 2.
The most common clinical error is prescribing testosterone for nonspecific symptoms like fatigue or low energy in older men, where it provides no proven benefit and exposes patients to unnecessary risks and costs.