The Leeds Teaching Hospitals NHS Trust

Alkaline Phosphatase (ALP)

Alkaline Phosphatase (ALP)

ALP hydrolyses phosphate esters at alkaline pH. ALP is present as several isoenzymes; liver, bone, placenta, intestines and kidney. Plasma ALP is principally the liver and bone isoenzymes. Liver ALP derives from the biliary canalicular membrane. Bone ALP derives from osteoblasts.

Tube 01 (SE) - Serum Gel
ID Tests&Tubes0004
Additional Information CALIPER ref ranges adopted for paeds.Adult: 30 - 130 U/L
Paediatric:
Age Female Male

<14 days 82-249 82-249
15 days to 1 yr 122-473 122-473
1 to 10 yrs 142-336 142-336
10 to 13 yrs 128-420 128-420
13 to 15 yrs 55-255 115-471
15 to 17 yrs 49-116 81-333
17 to 18 yrs 43-86 53-149
Turn Around A&E: N/A
Day Case: N/A
In-Patient: 6 Hours
Out-Patient: 24 Hours
GP: N/A
Send to Blood Sciences Cross Site
Contact For further details please contact Leeds Pathology customer services: leedsth-tr.pathologycustomerservice@nhs.net.
Collection Con Intensive care units, renal unit, transplant unit, patients on IV heparin use lithium-heparin (Green with Yellow ring) tube. Minimum volume: 500µl serum / plasma
Instructions for Lab Staff: Standard lab processing- No special requirements
Sample REQ Blood
Ref. Range Notes Blood Sciences reference ranges are available through the useful information and links page:
https://www.leedsth.nhs.uk/a-z-of-services/pathology/blood-sciences/useful-information-and-links/
Units iu/L
Telepath ALP2L
ICE Codes LALKP