Which of the following is NOT considered a necessary record for a thorough investigation?

In the context of a thorough investigation conducted by a medical death investigator, it is important to prioritize records that provide direct relevance to the circumstances surrounding a death. Terminal hospital records are vital as they contain information about the patient's final illness, treatment history, and medical conditions leading up to death. Birth hospital records can be essential as well, particularly in establishing identity and understanding any congenital conditions that may have played a role in the individual's health history.

Obstetrician records can also be pertinent in cases involving pregnancies, maternal health, or complications during childbirth, especially when a death may be connected to these factors. In contrast, social security records, while they may hold general information about a person's identity or financial status, do not directly contribute to the specifics of a medical investigation regarding the reasons for or circumstances surrounding a death. Therefore, they are not considered necessary for a thorough investigation.