PTH (Parathyroid hormone), plasma
Clinical Background:
PTH plays an important role in calcium homeostasis by maintaining the concentration of ionised calcium. As the serum calcium falls the parathyroid glands are stimulated to secrete PTH resulting in ...
PTH plays an important role in calcium homeostasis by maintaining the concentration of ionised calcium. As the serum calcium falls the parathyroid glands are stimulated to secrete PTH resulting in the mobilisation of calcium from skeletal stores, increasing the absorption of dietary calcium and decreasing renal clearance of urinary calcium.
In conjunction with calcium levels , PTH levels are useful to distinguish primary hyperparathyroidism, hypoparathyroidism and patients with hypercalcaemia of malignancy.
Test Details
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Discipline:
Biochemistry
Biochemistry
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Specimen Container Adult:
EDTA plasma
EDTA plasma
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Specimen Container Paediatric:
EDTA plasma
EDTA plasma
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Minimum Volume Adult:
1 mL blood
1 mL blood
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Minimum Volume Paediatric:
0.5 mL blood
0.5 mL blood
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Sample Stability:
Unseparated sample: 24 hours
Separated sample: 6 hours at 15-25°C, 3 days at 2-8°C, 4 months at -20°CUnseparated sample: 24 hours
Separated sample: 6 hours at 15-25°C, 3 days at 2-8°C, 4 months at -20°C -
Reference Ranges:
Adult 1.1 - 6.4 pmol/L (with normal calcium)
Adult 1.1 - 6.4 pmol/L (with normal calcium)
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Routine Contact Name:
Duty Biochemist
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Routine Telephone:
Freeman: 0191 244 8889
RVI: 0191 282 9719Freeman: 0191 244 8889
RVI: 0191 282 9719 -
Routine Email: