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Lactose Tolerance Test
Test Code046300
Alias/See Also
Lactose Consumption Test
CPT Codes
82951, 82952 (x2)
Preferred Specimen
Plasma
Minimum Volume
1 mL each tube
Instructions
Draw fasting sample prior to lactose administration. Give lactose according to the following: CHILDREN UP TO 12 YEARS: 2 g/kg body weight with a maximum of 50 g in 250 mL water. ADULTS: 50 g in 250 mL water Collect specimens at 30, 60, 90, and 120 minutes following lactose administration. Label each tube with the patient's name and time of drawing according to the following: The first tube should be labeled with the "patient's name," "fasting," and the time of the draw. The remaining four tubes should be labeled with the "patient's name" and the time of the draw.
Transport Container
Gray-top (sodium fluoride) tube
Transport Temperature
Maintain specimen at room temperature.
Specimen Stability
14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross elevation of fasting blood glucose; improper labeling
Methodology
Enzymatic
Setup Schedule
M-F,(1,3) SUN(2)
