Table 3.
Endocrine Laboratory Evaluation
| Lab test | Case 1 | Case 2 | Case 3 | Case 4 |
|---|---|---|---|---|
| TSH (0.27–4.2) μIU/mL | 2.6 | 1.28 | 0.54 | 2.00 |
| Free T4 (0.9–1.8) ng/dL | 0.8 | 0.7 | 0.62 | 1.72 |
| Total T3 (0.8–2.0) ng/dL | 0.2 | |||
| Total T3 (87–178) ng/dL | 20 | 31 | ||
| Free T3 (1.8–4.6) pg/mL | 1.8 | 1.1 | ||
| Testosterone (249–836) ng/dL | 88 | 198 | 614 | |
| LH (2.4–12.6) IU/L | 1.4 | 6.3 | ||
| FSH (4.7–21.5) IU/L | 3.1 | 1.9 | ||
| Prolactin (4.0–15.2) ng/mL | 11.5 | 17.7 | ||
| Cortisol (2.3–19.4) μg/dL | 25.1 | 21.7 | 18 | 18.6 |
| ACTH (0–46) pg/mL | 24 | 21 | 8.0 | |
| Collagen cross-links (nmol BCE/mmol creatinine) | 1,564 | |||
| IGF-1 (83–344) ng/mL | <25 | 147 | ||
| Growth hormone (<5.0) ng/mL | 1.33 | 0.60 |
Abbreviations: ACTH = adrenocorticotropic hormone; BCE = bone collagen equivalents; FSH = follicle-stimulating hormone; IGF-1 = insulin-like growth factor 1; LH = luteinizing hormone; T3 = triiodothyronine; T4 = thyroxine; TSH = thyroid-stimulating hormone.