R U H Bath, return to home page

Pathology Departments Requesting & Reporting Blood Test Information Phlebotomy Guide Contact us
Blood Sciences

Blood Test Information

Alkaline Phosphatase - bone specific
minimum sample volume required ~ 5ml

  back to assay index

Test Code: BSA

Tube type: SST

Special instructions

Reference range (adults)
Pre-menopausal women: 6.5 – 14.9
Males: 8.0 – 19.5
Levels are higher in children than in adults, by as much as 5-10 fold.
Post-menopausal reference ranges are poorly defined.

Sent away to Charing Cross Hospital
Contact Laboratory before requesting


Turnaround Time
21 days

Department: Biochemistry

Clinical Application
The most useful application of bone specific ALP measurement is to monitor the response to anti-resorptive therapy in metabolic bone disease, eg. treatment of osteoporosis with oral alendronate therapy, or treatment of Paget’s disease with intravenous pamidronate. It is the marker of choice for the diagnosis and monitoring of Paget’s disease. A baseline pre-treatment sample is taken, followed by serial samples post-treatment, eg. after 3 and 6 months.
Please refer to Alkaline Phosphatase page for non bone specific ALP.


back to top