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Test Code LACTOL Lactose Tolerance Test, Plasma

Performing Laboratory

Northwell Health Laboratories



Reference Values

See report.

Test Classification and CPT Coding

82952 x 5

Specimen Required

Container/Tube: Grey-top (potassium oxalate/sodium fluoride) tube(s)

Specimen Volume: 1 mL of plasma

Collection Instructions: 

1. Patient should be instructed to have nothing to eat or drink for at least 8 hours before test (except for sips of water).

2. Patient should be instructed to refrain from smoking and drinking coffee just before and during test.

3. Patient is given a lactose dose as follows:

A. 1 g/kg of body weight of pediatrics

B. 50 g for adults

4. Draw fasting blood specimen, and 30 minutes, 60 minutes, 90 minutes,120 minutes and 180 minutes post lactose ingestion.

Note: Label specimens appropriately (as fasting, 30, 60, 90,120  or 180 minutes) and Glucose levels will be performed for the lactose tolerance.

Day(s) and Time(s) Performed

Monday through Sunday

Computer Interfce Code

PDM #  5302441