1 Placental cord insertion visualization with prenatal ultrasonography. 2  J Ultrasound Med 1996;15:585-593. 3  Bjoro K Jr. 4  Vascular anomalies of the umbilical cord. 5  I. Obstetric implications.
Optimal levels for HDL (good) cholesterol are considered 60 mg/dL and higher. Slightly less great but still good levels are between 50 and 59 mg/dL. Levels that cause concern are considered 39 mg/dL or lower for men, and 49 mg/dL or lower for women.
High HDL. High levels of good, or HDL, cholesterol can significantly decrease a person's risk for heart disease. According to the latest guidelines, a level of 60 mg/dL and above is considered high.. In most cases, the cause is unknown, but it does seem to run in families. High HDL levels can also be caused by certain cholesterol medications, aerobic exercise, and regular alcohol consumption.