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Parathyroid Hormone

Alias: PTH, Parathyrin

Discipline: Clinical Chemistry

Test information: Raised levels of PTH in the setting of hypercalcaemia are indicative of primary or tertiary hyperparathyroidism. Symptoms of hyperparathyroidism include “bones” (increased turnover), “groans” (abdominal) and “stones” (renal). Note familial hypocalciuric hypercalcaemia (FHH) can cause diagnostic problems, as PTH may also be raised in this disorder. The two conditions can be differentiated by measuring calcium in a 24 hour urine sample. A normal or unmeasurable PTH in a patient with hypocalcaemia is suggestive of hypoparathyroidism.

Specimen Type(s)
  • Blood;
Other Acceptable Specimen Type(s)
Specimen Container - Adult
  • Gold Top SST BD;
Specimen Container - Paediatric
  • Clear - Plain;
  • N/A;
Part of a test profile?
Volume (min) of sample to be sent to laboratory
Patient Preparation, Sample Handling and Transport
To be received into the laboratory within 7 hours maximum post sample has been taken.
Maximum add on time
Less than 7 hours
Units and Reference Ranges / Interpretation
RR for Male and Female
<1y - 0.7-9.4 pmol/L
1-8y - 1.7-6.7 pmol/L
9-16y - 2.3-9.3 pmol/L
17-18y - 1.7-6.4 pmol/L
19 years and above - 1.6 - 7.2 pmol/L
UKAS number
UKAS accredited test?

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Last updated: 03-05-2024