Final answer:
High triglycerides is not a desirable blood lipid value, as healthy levels should be below 150 mg/dL. High levels are associated with increased risk of heart disease, while low LDL cholesterol and high HDL cholesterol are beneficial for cardiovascular health. The correct option is 3).
Step-by-step explanation:
Desirable Blood Lipid Values
Out of the given options, high triglycerides is not a desirable blood lipid value. Health experts recommend keeping triglyceride levels below 150 mg/dL.
A lipid profile test includes measurements of total cholesterol, Low-Density Lipoprotein (LDL), sometimes referred to as "bad cholesterol,", High-Density Lipoprotein (HDL), often dubbed "good cholesterol," and triglycerides. LDL transports cholesterol from the liver to the tissues, and high levels may increase the risk of heart disease.
Conversely, HDL transports cholesterol back to the liver for disposal, thus reducing heart disease risk when levels are high. The threshold for high triglycerides, as per the NCEP-ATPIII definition, is over 200 mg/dL. Therefore, the correct answer is high triglycerides as the undesirable value.
Having low LDL cholesterol and high HDL cholesterol is considered beneficial for cardiovascular health.
Finally, while having low total cholesterol is generally good, it is beneficial only when it is a result of low LDL and optimal HDL levels. It should be noted that excessively low total cholesterol may sometimes be indicative of other health issues. Option 3) is the correct one.