Test Directory

Test Code
LTT
Test Name
Lactose Tolerance Test
CPT Codes
82951
Included Tests
  • Glucose, Fasting
  • Glucose, 1st Hour
  • Glucose, 2nd Hour
Expected Turnaround Time
1 day
Clinical Utility
Used in the evaluation of lactase deficiency; workup of lactose intolerance, malabsorption syndromes.
Specimen and Container Info

Specimen Type: Plasma

Preferred Collection Container: Gray Top (Sodium Fluoride, Potassium Oxalate)

Minimum Acceptable Volume: 0.4 mL

Processing and Submission Instructions

Tubes with anticoagulant: To ensure accurate test results, all tubes containing an anticoagulant or preservative must be allowed to fill completely. Attempts to force more blood into the tube by exerting pressure, as in collection with a syringe, will result in damage to the red cells (hemolysis).

Patient Preparation
Fasting
Transport Instructions

Transport to the laboratory refrigerated.

Stability Requirements

Refrigerated

7 days
Methodology
Endpoint
Reference Intervals

See individual test listings

Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, daily