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Post dilution, calculated serum intact parathyroid hormone (PTH) levels for the patient and a normal subject*
| Dilution factor | Patient | Normal subject |
| Undiluted (ng/L) | 9.1 | 42 |
| 1:16 dilution (ng/L) | 264.9 | 309 |
| 1:32 dilution (ng/L) | 598.7 | 721 |
| 1:64 dilution (ng/L) | 1359.3 | 1712 |
*Normal serum intact PTH levels: 15–65 ng/L. Post dilution, the calculated serum intact PTH levels were found to be high in both the index patient and a normal subject.
