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Inferior Petrosal Sinus Sampling Results
| Adrenocorticotropic hormone (pg/mL) | Ratios* | |||||
|---|---|---|---|---|---|---|
| Time (min) | Left IPS | Right IPS | Peripheral | Left IPS/Peripheral | Right IPS/Peripheral | Left IPS/Right IPS |
| 0 | >2000 | 766 | 116 | 17.2 | 6.6 | 2.6 |
| 2 | >2000 | >2000 | 140 | 14.3 | 14.3 | 1.0 |
| 5 | >2000 | 888 | 162 | 12.4 | 5.5 | 2.3 |
| 10 | >2000 | 1270 | 34 | 59.3 | 3.8 | 15.7 |
| 15 | >2000 | >2000 | 52 | 38.5 | 38.5 | 1.0 |
Abbreviation: IPS = inferior petrosal sinus.
*For ACTH levels >2000 pg/mL, 2000 was used to calculate ratios.
