... 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)

... That formula works pretty good for triglycerides in the normal range of approximately 100 to 200. With triglycerides above 200, and especially above 400, that calculation tends to underestimate the actual LDL. ... (7 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)

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

... thirties with a cholesterol level of 6.4. I was very fit and healthy, not overweight, and took daily supplements with plant sterols in them, and high doses of omega 3 fish oils. ... (7 replies)

... Its not really conflicting because HDL is your "good" cholesterol which helps counteract the "bad" LDL cholesterol so keeping your LDL, HDL and trigs in range individually and having a good ratio is more important than the total (6 replies)

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

... I don't think it is correct that HDL and LDL are the same, you might want to go over the numbers again. LDL is typically much higher than HDL. Those numbers don't really add up properly. Call them again to get the numbers. In the US, at least, you can ask for a copy of the report as well; hopefully, you can do that there as well so you have a hard copy.
The basic... (1 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)

... Great explanation...
So... here is the calculation:
Divide your Triglycerides by 5 113/5 = 22.6
Now, the formula is: (6 replies)

... What is your HDL (good cholesterol)? Your numbers are similar to my untreated numbers and I'm age 39. Do you exercise? I do and still have those type numbers, untreated. First, you might try diet and exercise modifications and then retest. Also, you can add Niacin (Vitamin B-3) as you may get an increase in HDL and a reduction in LDL/Total. Plus, you can try a regimen of... (22 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)

... A decent percentage of the time the calculated LDL on a standard test isn't correct anyway. It's just a calculation and can be off substantially, especially for people with low or high trig values. ... (5 replies)

... the beginning of all this, my LDL would have been high if it had been measurable. I believe LDL can be measured properly but is expensive. In UK it is done by calculation but can only be valid when trigs are below a certain level. ... (9 replies)

... Okay mom,
I think you can look at it thusly: the Lipitor is giving you 95-117 and isn't really too dosage dependent. Often people get simialr results for 10 and 20 mg...I did!
I would say go back to 10 mg and take some dietary action. I'll bet you'll slide below 100 LDL if you do the basics.
Since LDL calculation comprises 1/5 of the triglycerides, any large difference in... (8 replies)

... A standard lab lipid panel with a calculated LDL shouldn't be used in determining the need for statin therapy in my opinion. The LDL calculation algorithm is only "accurate" when your TC and TG are within a narrow "normal" range. ... (10 replies)

... AFAIK the direct calculation of LDL is accurate without regard to elevated triglyceride levels. ... (20 replies)