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UCLA Health - High PTH After Parathyroid Surgery | UCLA Endocrine Center

Thumbnail of the video “UCLA Health - High PTH After Parathyroid Surgery | UCLA Endocrine Center”
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Author: UCLA Health
Categories: Health
Tags: health
Views: 2 · Last viewed: 2026-10-16 15:01 UTC

Short Summary

Main recommendation: After parathyroid surgery, a high PTH level with a normal blood calcium level is usually not a problem and generally does not require more surgery or specific treatment. Persistently high PTH with high calcium, by contrast, may signal an unsuccessful operation or a missed overactive gland.

Key Points

  • Primary hyperparathyroidism is usually caused by one overactive parathyroid gland, called an adenoma; during surgery PTH is monitored in real time to confirm it drops after removal.
  • After successful surgery, PTH should drop right away, and calcium usually returns to normal within a few hours or sometimes days.
  • If both PTH and calcium remain high, the operation may not have removed the correct gland, or another overactive gland may have been missed; a second surgery is rarely needed.
  • A normal calcium with high PTH (normocalcemic PTH elevation) occurs in 25 to 40% of patients after successful surgery.
  • Possible causes of high PTH with normal calcium include low vitamin D, kidney disease, or no clear reason, with some people simply needing a higher PTH to keep calcium normal.

Details Worth Noting

  • Concrete instructions: The video gives no step-by-step treatment plan, but its follow-up guidance is: have calcium and PTH blood tests from time to time, check your vitamin D level, and check your kidney function. If vitamin D is low, it is easy to fix with vitamin D supplementation.
  • Hyperparathyroidism recurrence: A high PTH level could slightly raise the risk of hyperparathyroidism returning, but this matters mainly if blood calcium also rises again, typically to 10.4 or greater.
  • Clinical context: The speaker, Dr. Michael Yay of UCLA Health Endocrine Surgery, says a persistently high PTH with normal calcium is not dangerous and does not harm health, but this is his stated view from the video, not individualized medical advice.
  • Surgical follow-up: A second surgery is described as needed only in rare cases where both PTH and calcium stay high.

Bottom Line

A high PTH after parathyroid surgery is only a concern when blood calcium is also high, so a normal calcium with high PTH generally calls for monitoring rather than intervention.