Free Fatty Acid Assay试剂盒- Quantification (ab65341)


  • 产品名称
    Free Fatty Acid Assay试剂盒- Quantification
    参阅全部 Fatty acid 试剂盒
  • 样品类型
    Cell culture supernatant, Urine, Serum, Plasma, Other biological fluids, Tissue Extracts
  • 检测类型
  • 灵敏度
    > 2 µM
  • 检测时间
    0h 40m
  • 种属反应性
    与反应: Mouse, Rat, Human
    预测可用于: Species independent
  • 产品概述

    Abcam's Free Fatty Acid Quantification Assay Kit provides a convenient, sensitive enzyme-based method for detecting the long-chain free fatty acids (FA) in various biological samples, such as serum, plasma and other body fluids, food, growth media, etc. In this assay, FA are converted to their CoA derivatives (coenzyme A), which are subsequently oxidized, leading to formation of color/ fluorescence. Fatty acids can then be easily quantified by either colorimetric (spectrophotometry at λ= 570 nm) or fluorometric (at Ex/Em= 535/587 nm)
    Visit our FAQs page for tips and troubleshooting.

    Review our Metabolism Assay Guide to learn about assays for metabolites, metabolic enzymes, mitochondrial function, and oxidative stress, and also about how to assay metabolic function in live cells using your plate reader.

  • 说明

    This assay detects formation of C-8 (octanoate) and longer fatty acids.

  • 经测试应用
    适用于: Functional Studiesmore details



Our Abpromise guarantee covers the use of ab65341 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

应用 Ab评论 说明
Functional Studies Use at an assay dependent dilution.


  • Plasma FFA levels was measured using ab65341 in male and female wild-type (WT) or AT2KO mice either on normal diet (ND) or high fat diet (HFD).

  • Colorimetric standard curve: mean of duplicates (+/-SD) with background readings subtracted.

  • Free Fatty Acid measured in biologicals showing concentration (µM)

  • Flourometric standard curve: mean of duplicates (+/-SD) with background readings subtracted.



This product has been referenced in:
  • Okumura T  et al. Extra-pancreatic invasion induces lipolytic and fibrotic changes in the adipose microenvironment, with released fatty acids enhancing the invasiveness of pancreatic cancer cells. Oncotarget 8:18280-18295 (2017). Mouse . Read more (PubMed: 28407685) »
  • Domingo-Espín J  et al. Dual Actions of Apolipoprotein A-I on Glucose-Stimulated Insulin Secretion and Insulin-Independent Peripheral Tissue Glucose Uptake Lead to Increased Heart and Skeletal Muscle Glucose Disposal. Diabetes 65:1838-48 (2016). Read more (PubMed: 27207515) »

See all 25 Publications for this product


Unfortunately, the assay buffers in both kits have different components and pH. Therefore they cannot be used interchangeably.

I'm afraid the exact details of the mechanism are proprietary, however we do have this description as noted in the Protocol Booklet:
"In the assay, Fatty Acids are converted to their CoA derivatives,
which are subsequently oxidized with ...

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Repeating in triplicate certainly reduces the margin of error in any reading, however you should be able to produce a linear curve using the protocol found in the kit booklet.

The kit should be able to detect fatty acids of chain lengths between C8 and above with equal efficiency and you should therefore not need to perform a different standard for the caprylic acid and palmitic.

I can now confirm that no cross reactivity would be expected with the Free Fatty Acid Quantification Kit (ab65341) with lechitins, phosphoatidyl choline or other triglycerides. This kit is specific for free fatty acids and would require an enzyme to co...

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Yes, these kits are suitable for all mammalians.

If your sample reading was 2.5 nmol of fatty acid, and you used 6uL of serum per well, the calculations would be as follows: (2.5 nmol / 6uL) * (256 ng / nmol) = 106.67 ng / uL = 106.67 * (10-9 g / 10-6 L) = (106.67 / 10) (10-3 g / 10-1 L) = 10.667 mg/dL

The standard wells contain 0, 2, 4, 6, 8, 10 nmol per well. The molecular weight of the standard, palmitic acid, is 256 g/mol, or 256 ng/nmol. so each standard well contains, in micrograms: 0, 0.51, 1.02, 1.54, 2.05, 2.56 After subtracting the op...

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Here is what the lab is suggesting: Serum samples can be tested directly in the following manner: For testing liquid samples, different volume of samples can be directly added to each well in a 96-well plate, then bring up the volume to 50 µl/well ...

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I have contacted the lab and advice that after pelleting the cells by trypsinization you follow these steps: 106 cells or 10 mg tissue samples can be extracted by homogenization with 200 µl of chloroform-Triton X-100 (1% Triton X-100 in pure chloroform...

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