Calculating LDL level
Ken Mintz
> (1) LDL = Total Cholesterol - (HDL + Triglycerides/5)
:
> (2) LDL = Total Cholesterol - (HDL + Triglycerides/2.2)
>
> Which is the correct formula for calculating LDL levels when cholesterol
> levels are measured in millimoles/litre (as I believe is standardly done
> here in Canada)?
It looks like #2 (divide by 2.2).
Attached is the information that had been posted in response to my inquiry.
-- Regards, Ken Mintz
From: nar...@clpd.Kodak.Com (Manish Narang (17123))
Newsgroups: sci.med,sci.med.nutrition
Subject: Re: LDL: how measured?
Followup-To: sci.med,sci.med.nutrition
Date: 3 Apr 1995 14:05:04 GMT
Organization: Johnson & Johnson Clinical Diagnostics
[...]
Don't forget the units we are working with.
LDL=CHOL-HDL-VLDL; where VLDL is
CONVENTIONAL UNITS (MG/DL): VLDL = TRIG/5
SI UNITS (MMOL/L) VLDL = TRIG/2.2
Friedwald indicated that this equation in not appropriate if the Trigyceride is
greater than 400 MG/DL (4.52 MMOL/L) or on samples from patients who have type
III Hyperlipoprotinemia (ELECTROPHORESIS "BROAD BETA" LIPOPROTEIN) present.
--
Manish Narang
nar...@cldx.com