PTH
Parathyroid hormone
High
75.3pg·mL⁻¹Ref 15–65 pg·mL⁻¹
Z +2.82↑ Bad

The card shows an example result of 75.3 pg·mL⁻¹, which is 2.82 SD above the mean.

What it measures

Parathyroid hormone is released by the parathyroid glands when calcium falls. It frees calcium from bone, keeps it in the kidneys, and activates vitamin D.

Reference range

FieldValue
AbbreviationPTH
GroupBone and mineral
Unitpg·mL⁻¹
Healthy range15–65
Mean40
SD12.5
Direction↑ Bad — a raised value is the concern.

The mean is (low + high) / 2 and the SD is (high − low) / 4, so the healthy range covers Z from −2 to +2.

Reading the result

  • High — Often a response to low vitamin D or low calcium intake. It can also point to an overactive parathyroid gland or kidney disease. Long-term high PTH thins bone.
  • Low — Not the concern this panel tracks. Low PTH with high calcium needs a doctor's review.

Notes

  • Read it together with calcium and vitamin D.
  • This page is general information, not medical advice. Discuss results with a clinician.