Question 46

The last two digits of an NDC number identify the package size of a drug.

The last two digits of an NDC number specifically denote the package size, indicating how many units of the drug are contained within that package.

A) All of the digits

This option is incorrect because not all digits in the NDC number specify the package size. The NDC number is composed of three segments, and only the last two digits are relevant for package size.

B) The first five digits

This choice is incorrect as the first five digits of an NDC number represent the labeler code and the product code, which include information about the manufacturer and the specific drug product, not the package size.

C) The last two digits

This is the correct answer because the last two digits of an NDC number are specifically designated to indicate the package size, which tells users how many units or dosage forms are included in the package.

D) The central four digits

This option is incorrect since the central four digits of an NDC number refer to the drug's specific formulation and strength, not the package size.

Conclusion

In summary, the last two digits of an NDC number are critical for identifying the package size, while the other options either represent different aspects of the drug’s identification or are entirely unrelated. Therefore, option C is definitively correct, as it directly addresses the question regarding package size identification.