cholesterol number into your total cholesterol number. An optimal ratio is less than 3.5-to-1. A higher ratio means a higher risk of heart disease. Cholesterol is carried in the blood attached to proteins called lipoproteins. There are two main forms, LDL (low density lipoprotein) and HDL (high density lipoprotein). LDL cholesterol is often referred to as "bad cholesterol" because too much is unhealthy.
Inform your doctor if you are on any medications, have any allergies or underlying medical conditions before your HDL / LDL ratio. Your doctor will give specific instructions depending on your condition on how to prepare for HDL / LDL ratio.
You need to be fasting at least 10 hours before this test.
| Gender | Age groups | Value |
| MALE | All age groups | 40 - 49 mg/dll |
| FEMALE | All age groups | 50 - 59meq/dl |
| UNISEX | All age groups | < 100mEq/dl |