Testosterone Self-Test   You or someone you know might have low testosterone. Begin with this self-test: 1. Do you have a decrease in libido? (Sex Drive) 2. Do you have a lack of energy? 3. Do you have a decrease in strength and /or endurance? 4. Have you lost height? 5. Have you noticed a decreased "enjoyment of life"? 6. Are you sad and/or grumpy? 7. Are your erections less strong? 8. Have you noticed a recent deterioration in your ability to play sports? 9. Are you falling asleep after dinner? 10. Has there been a recent deterioration in your work performance?