# How accurate is the Friedewald equation?

## How accurate is the Friedewald equation?

The authors used the new Modified Friedewald equation to calculate that the LDL had 83.8% accuracy when compared to direct measured LDL +/- 10 mg. This equation is more accurate than the standard (original) Friedewald equation with OR of 2.63.

### What is LDL Friedewald?

Calculates LDL based on total and HDL cholesterol and triglycerides. INSTRUCTIONS. Note: the Friedewald formula is known to be inaccurate at extremely high triglyceride and total cholesterol levels. If there is any question about accuracy of estimated LDL, a direct level should be measured.

#### What is the Friedewald formula for LDL-C measurement?

The calculation of LDL-C by the traditional Friedewald’s formula (F-LDL-C) is: F-LDL-C (mg/dl) = TC-HDLC – TG/5 [6]. The LDL-C calculated using Friedewald’s formula correlates well with LDL-C measured by beta quantification, but doesn’t come without any limitations.

**What is HDL cholesterol normal range?**

What are optimal levels of HDL cholesterol?

At risk | Desirable | |
---|---|---|

Men | Less than 40 mg/dL (1.0 mmol/L) | 60 mg/dL (1.6 mmol/L) or above |

Women | Less than 50 mg/dL (1.3 mmol/L) | 60 mg/dL (1.6 mmol/L) or above |

**What is Friedewald formula used for?**

Abstract. Currently, the Friedewald formula (FF) is the main method for evaluating low-density lipoprotein cholesterol (LDL-c). Recently, many limitations have emerged regarding its use, including patients with triglyceride levels ≥400 mg/dL, diabetes mellitus, and kidney or hepatic chronic diseases.

## What for Friedewald formula is used?

Currently, the Friedewald formula (FF) is the main method for evaluating low-density lipoprotein cholesterol (LDL-c). Recently, many limitations have emerged regarding its use, including patients with triglyceride levels ≥400 mg/dL, diabetes mellitus, and kidney or hepatic chronic diseases.

### What does the C stand for in LDL-C?

Abbreviation for low density lipoprotein-cholesterol.

#### What is a good HDL cholesterol?

HDL under 40 is considered poor and a risk factor for heart disease in men and women. HDL goal for men is 40 or higher and reaching this is considered to be good. HDL goal for women is 50 or higher and reaching this is considered to be good.

**How do I lower my LDL C?**

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- Reduce saturated fats. Saturated fats, found primarily in red meat and full-fat dairy products, raise your total cholesterol.
- Eliminate trans fats.
- Eat foods rich in omega-3 fatty acids.
- Increase soluble fiber.
- Add whey protein.

**What is a normal LDL reading?**

But in general, LDL results are as follows: Optimal: Less than 100 mg/dL. Near optimal: 100-129 mg/dL. Borderline high: 130-159 mg/dL.

## When was the Friedewald equation published?

The formula published by Friedewald WT et al in 1972 1 was validated by Warnick GR and colleagues in 1990. 2 VLDL-c = Triglycerides/5 LDL-c = Total cholesterol – (HDL-c + VLDL-c) Limitation of Friedewald equation

### How is the Friedewald equation used to calculate cholesterol levels?

The Friedewald equation is used to calculate VLDL-c (very low density lipoprotein cholesterol) and LDL-c (low density lipoprotein cholesterol) levels in a lipoprotein estimation test. In this method, total cholesterol, triglycerides and HDL-c (high density lipoprotein cholesterol) are directly estimated using reagents.

#### Who is the author of the book Friedewald V Fredrickson?

1972 Jun;18(6):499-502. Authors W T Friedewald, R I Levy, D S Fredrickson PMID: 4337382 No abstract available Publication types

**Is the Friedewald equation accurate for estimation of VLDL-C?**

Friedewald equation is not very accurate for estimation of VLDL-c. Friedewald and colleagues had pointed this out in their original publication in 1972 itself. But at that time VLDL-c levels were low compared to LDL-c and the inaccuracy was tolerable.