Parathyroid Hormone (PTH)
Parathyroid Hormone (PTH) explained
PTH regulates calcium and bone metabolism; measured with calcium and vitamin D to evaluate parathyroid disorders.
Varies by laboratory (LDT/CLIA; not FDA‑approved as a drug)Parathyroid Hormone (PTH) helps treat
• Hyperparathyroidism/hypoparathyroidism workup
• Calcium disorders
• Bone metabolism evaluation
additional medications
• Related clinical evaluation and history
• Repeat testing to confirm abnormal results
• Additional targeted labs as recommended
medication risks
• False positives/negatives leading to unnecessary anxiety or missed diagnoses
• Privacy and insurance implications depending on results
• Pre‑analytical variables (fasting, meds) can affect accuracy
side effects
• Bruising or soreness at draw site
• Lightheadedness or fainting (rare)
• Infection at puncture site (very rare)
FAQs
Q: Fasting?A: Not usually required.
Q: Vitamin D status impact?
A: Yes—low vitamin D can raise PTH.
Q: When paired with calcium?
A: Often drawn together for interpretation.
Q: Medications?
A: Lithium and others can affect PTH.
Q: Insurance?
A: Covered when clinically indicated.
