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Alkaline Phosphatase, Bone Isoenzyme

Alternative Names/Synonyms	BALP, Ostase
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Biochemistry
Specimen Type	Blood
Test Code	BALPS, BALPP

Clinical Significance

Assisting management of postmenopausal osteoporosis and Paget's disease, monitoring of postmenopausal women on hormonal or bisphosphonate therapy.

Specimen Requirements (Sample Type)

Serum, Plasma

Specimen Requirements (Volume (mL))

0.5 mL

Specimen Requirements (Tube Type)

Serum (Gold SST)
Plasma (Light Green PST)
Collection Containers – Tube Types

Draw (mL)

4.5 mL

Collection Requirements

Blood Collection Instructions

Sample Stability

Room Temperature: 24 hours

Fridge: 2 days @ 2-8°C

Freezer: 2 months @ -70°C;

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

UniCel DxI 600, immunoassay

Test Availability

Weekdays

Routine Turnaround Time

1 week

Reference Ranges

Pre-menopausal Females: ≤ 14 μg/L
Post-menopausal Females: ≤ 22 μg/L
Males: ≤ 20 μg/L

In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 extension 4688