Alkaline phosphatase

Alkaline phosphatase
S-AFOS KL 1046

Most of the alkaline phosphatase in serum (S-AFOS) in adults is usually liver-derived, but bone-derived enzyme is found as well. Serum alkaline phosphatase is elevated in e.g. Paget’s disease, rickets and bone metastases as well as hyperparathyroidism. Elevated values can also be seen in patients with bile duct obstruction.

Indications

Diagnostics and monitoring of hepatic, biliary and bone diseases. Diagnostics of increased osteoblast activity.

Sample

1.0 mL of serum (min. 0.5 mL) or Li-heparin plasma. Haemolysis interferes with the assay.

Storage and delivery

Delivery at room temperature, if it arrives within 24 hours. Haemolysis interferes with the assay.

Method

Photometric, in accordance with IFCC recommendation.

Turnaround time

1-2 weekdays

Reference ranges

1 – 5 yrs

115 – 390

U/L

6 – 7 yrs

115 – 460

U/L

8 – 9 yrs

115 – 345

U/L

boys, 10 – 11 yrs

115 – 335

U/L

girls, 10 – 11 yrs

115 – 435

U/L

boys, 12 – 13 yrs

125 – 405

U/L

girls, 12 – 13 yrs

90 – 335

U/L

boys, 14 – 15 yrs

80 – 445

U/L

girls, 14 – 15 yrs

80 – 210

U/L

boys, 16 – 18 yrs

55 – 330

U/L

girls, 16 – 18 yrs

35 – 125

U/L

adults, over 18 yrs

35 – 105

U/L

Inquiries 

martin.tornudd@mineraalilaboratoriomila.fi