Friday, October 31, 2014
Friday, October 24, 2008 Shelley, Community Member, asks

Q: What is the formula for figuring LDL?

I have my Total Cholesterol, HDL and Triglcerides levels. I know that there is a formula to figure LDL using these.  What is that formula?

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Answers (4)
10/24/08 1:36pm

Hi Shelley,


Formula to calculate total cholesterol:


Total Cholesterol = HDL + LDL + (Triglycerides x .20)


So, to calculate your LDL means rearranging the formula:


LDL = Total cholesterol - HDL - (Triglycerides x .20)


All the best,


Lisa Nelson, RD, LN

The Heart of Health - Heart Health and Weight Loss Tips

gavin, Community Member
1/30/11 9:38pm

The Western Journal of Medicine has a different formula: LDL = cholesterol - (HDL + triglycerides/5). This and the one listed here give different results.


gavin, Community Member
1/30/11 9:41pm

Never mind. Stupid math mistake on my part. I don't know how to delete my previous comment, but I would if I could. 

ENALA, Community Member
9/21/12 1:55pm

The friedewalf formula: LDL: total cholesterol-(HDL+Tryglyceride/5)

priya, Community Member
5/13/11 4:10pm

where u get hdl from


Art Lewis, Community Member
2/ 3/09 10:54am

LDL = Total cholersterol - HDL - Triglicerides/5



That is, total cholesterol minus HDL cholesterol minus one-fifth of the trigliceride level

Dan, Community Member
7/13/10 7:15pm

hdl = 35, Total cholesterol = 148 and Triglicerides = 65

MedTech, Community Member
10/11/10 3:26am

The 'Total Cholesterol - HDL - (Triglycerides/5)' equation is not valid if the triglycerides are greater than 400.

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By Shelley, Community Member— Last Modified: 01/16/14, First Published: 10/24/08