Testosterone Cypionate Dosing and Administration for Adult Males with Hypogonadism

Dosing Recommendations

The most effective dosing regimens for testosterone cypionate appear to be 200 mg every 2 weeks, which effectively suppress elevated LH and FSH levels to normal range while maintaining serum testosterone within physiologic levels 1

Target testosterone levels should be in the mid-normal range (450-600 ng/dL) 2
Serum testosterone levels should be measured 3-6 months after treatment initiation and then annually to ensure levels remain in the target range 2
Regular monitoring of hematocrit/hemoglobin is essential as testosterone therapy commonly causes erythrocytosis, particularly with injectable formulations 3
If hematocrit rises above the reference range, consider temporarily withholding therapy, reducing the dose, or performing phlebotomy 3
Prostate monitoring through digital rectal examination and PSA measurement is recommended before initiating therapy, with regular PSA monitoring during treatment 3

Diagnosis of hypogonadism requires both low testosterone levels (<300 ng/dL) and symptoms/signs of testosterone deficiency 2
Diagnosis should be confirmed with a second morning total testosterone measurement before initiating treatment 2
Injectable testosterone formulations may be associated with greater fluctuations in serum testosterone levels compared to transdermal preparations 1

Injectable testosterone may be associated with a greater risk of cardiovascular events compared to gels, possibly due to increased time spent in both supratherapeutic and subtherapeutic ranges 1
Testosterone therapy is contraindicated in men seeking fertility 4
Active or treated male breast cancer remains an absolute contraindication for testosterone therapy 4
Testosterone therapy should be avoided in patients with recent cardiovascular events (within past 3-6 months) 2

For patients with erectile dysfunction, combination therapy with testosterone replacement and PDE5 inhibitors may be more effective than testosterone alone in more severe forms of ED 4