Final Answer:
A pregnant woman must have a glucose challenge test (GCT).The correct preprocedure teaching for a glucose challenge test (GCT) is Bring a urine specimen to the laboratory on the day of the test.Thus the option 2) Bring a urine specimen to the laboratory on the day of the test is correct.
Step-by-step explanation:
A glucose challenge test (GCT) is commonly used during pregnancy to screen for gestational diabetes. The preprocedure teaching is crucial in ensuring accurate test results and a smooth testing process. Fasting for 12 hours before the test (Option 1) is not required for a GCT, as it is different from the glucose tolerance test (GTT). Bringing a urine specimen to the laboratory on the day of the test (Option 2) is important as it helps assess baseline kidney function and allows for the identification of potential urinary tract infections, which can impact glucose levels.
Option 3, "Be prepared to have 4 blood specimens taken on the day of the test," is not accurate for a standard GCT. Usually, a GCT involves a single blood draw, with the woman drinking a glucose solution, waiting for a designated period, and then having her blood glucose levels measured. The GCT typically takes one hour to complete, aligning with Option 4. However, it's essential to clarify the specific instructions for the test as protocols may vary. Overall, Option 2 stands out as the most relevant preprocedure teaching for a glucose challenge test, emphasizing the importance of providing a urine specimen on the day of the test to support comprehensive prenatal care.
Thus the option 2) Bring a urine specimen to the laboratory on the day of the test is correct.