... If you mean that your mother had two different blood tests done at two different labs and they came up with two different TC numbers, this is not surprising. They are likely using the same testing protocol, but these numbers are not absolutes like your height. In other words, you could have the very same lab take a sample, five minutes later take another sample. Then send... (6 replies)

... Do you know what is the standard way of calculating total cholesterol level? ... (6 replies)

... Hey bigal, your forumla is identical to the one you said was wrong. You said:
LDL = TC - HDL - (Trigs/5)
Which just happens to be the same exact forumula as:
TC = LDL + HDL + (Trigs/5). (6 replies)

... No the formula is wrong the correct one is
Total cholesterol minus HDL minus the (Triglycerides divided by 5)
So here is an example Chol.=174 Trig= 296 HDL= 54 LDL=60.8
174 - 54=120
296. divided by 5=59.2
120
-59.2
60.8 (6 replies)

... There SHOULD be no difference in the cholesterol measurement from lab to lab. ... (6 replies)

... The Friedewald Formula is normaly used to estimate LDL cholesterol. The only lipids that are directly read are TC, TG and HDL. The formal uses the following calculation:
Estimation of LDL Cholesterol = Total Cholesterol – HDL Cholesterol – VLDL Cholesterol*
* Estimation of VLDL Cholesterol = Trigs/5 (Trigs/2.2 for mmol/L) (6 replies)

... (2 replies)

... I understand that if you divide a certai number of your cholesterol with another number, either HDL, LDL or toal, you get a number between 1,0 and 5.0 that tells you where you should be. ... (2 replies)

... Gee,
I always thought it was:
Trig/5 = TC - LDL - HDL :D:D:D: (6 replies)

... The figures for my mum doesn't seem to fit in the formula which zip or the web told me (i.e. HDL+LDL+Triy/5):
HDL 63
LDL 150
Triy 77
TC 247
There comes my question.
Anyway thanks for the feedback. I agree it's no good asking things that are already plenty there on the web. (6 replies)

... I was confused when I found out how Total Cholesterol is calculated. ... (6 replies)

... Those are excellent numbers, especially your high HDL level and very low triglyceride level. And don't worry about that LDL of 170 because that number isn't accurate. ... (7 replies)

... and 200 mg of DHA. ... (24 replies)

... Using the numbers above would give Triglycerides of 6. ... (1 replies)

... At last calculation mine was 67. I believe there may be something to the reversal just from my own experiences. ... (8 replies)

... As a side note, the VLDL can be calculated in a couple of ways. ... (2 replies)

... A common method is to divide total by HDL to get a ratio. The lower the ratio the better. A ratio of about 4.5 is considered average risk, but average risk is not ideal considering that heart disease is a very common cause of death. ... (2 replies)

... AFAIK the direct calculation of LDL is accurate without regard to elevated triglyceride levels. The author of the Friedewald formula has also stated that a calculated LDL is only accurate when both the total cholesterol and LDL levels are within the normal range. ... (20 replies)

... There is more to the calculation than you have included. One factor is your total cholesterol. ... (1 replies)

... Would individuals with these cholesterol balances be at high risk or low risk for developing heart disease? ... (19 replies)