What would NOT be a way that parathyroid hormone could alter plasma calcium levels?

Parathyroid hormone (PTH) primarily increases plasma calcium levels by promoting calcium release from bones, enhancing intestinal absorption of calcium, and increasing renal tubular reabsorption of calcium. A mechanism that would NOT alter plasma calcium levels would be the direct inhibition of calcium absorption in the intestines, as this would decrease calcium availability rather than increase it. Additionally, any process that solely focuses on decreasing calcium excretion without affecting bone resorption or intestinal absorption would also not effectively raise plasma calcium levels.