Parathyroid Hormone PTH

Parathyroid hormone (PTH) plays a significant role in calcium homeostasis. Its main functions are to stimulate osteoclastic bone resorption; increase renal resorption of calcium; reduce proximal resorption of phosphate and increase 1α-hydroxylase activity.
Reference range: 

The reference range for PTH is 10-65 ng/L, for an adjusted calcium within normal limits.

Sample type and Volume required: 
Serum or EDTA plasma
Turnaround time: 
1 day
Storage and transport: 
For external samples, please transport frozen. Cell-free serum is stable for 8 hours at 15-25°C, 2 days at 2-8°C and 6 months at -20°C. Plasma is stable for 2 days at 15-25°C, 3 days at 2-8°C and 6 months at -20°C. For sample shipment, samples should be stored frozen. Repeated freezing and thawing of samples should be avoided (freeze only once).
Time limit for extra tests: 
PTH cannot be retrospectively added on
Blood Sciences Department-Guy's And St Thomas' Hospital
Result Query: 020 7188 8008
St Thomas' Hospital
North Wing - 5th Floor
Westminster Bridge Road
London SE1 7EH
Contact: 020 7188 9247

Guy's Hospital
Southwark Wing - 4th Floor
Great Maze Pond
London SE1 9RT
Contact: 020 7188 4781
Automated Chemistry Laboratory at Guy's and St Thomas' Clinical Advisory Service
Monday – Friday, 09:00-17:00 h: 07738897061
Out of hours, weekends & bank holidays: find details on Rotawatch on Trust intranet GTi, or contact via GSTT switchboard.
For clinical advice or interpretation of results, please contact the laboratory in the first instance.

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Last updated: 26/05/2017