Are you choosing the right cooking oil for your family?
What determines quality? Are the pricier ones better? Are imported oil, olive oil and coconut oil overrated? Test-it™ presents: the cooking oil confidential.

Test-it™ Introduction

Our lives are inseparable with cooking oil. Every day we consume cooking oil through stir frying, sauté, deep frying and dressing our food. Not only does it act as a medium for heat delivery, cooking oil also boosts flavour and makes essential nutrients for the human body. Learning to choose the right cooking oil and mastering the proper way of application is extremely important. Scandals outbreak of gutter oil and adulterated oil in recent years induces public fear in cooking oil consumption.

Test-it™ sampled 115 types of cooking oil in the market, analyzed with world leading biological testing technology Testing 2.0. The safety tests conducted in professional testing laboratories shows that 49 gets the Green Fish (Excellence), 23 gets the Yellow Fish (Basic) and 43 gets the Red Fish (Sub-Optimal). Contrary to common believe, the oil perceived as more healthy actually show less favourable results. Olive oil and coconut oil scored less than their counterparts. This also applies to European brands compared to oil from other origins. Expensive oils do not necessarily means safer.

According to World Health Organization and United Nations, choosing the wrong product could cause cancers, infertility, precocious puberty, obesity and neurological disorders. Test-it™ provide clear, direct test reports with lifestyle tips. Equipped with scientific and objective information, consumers can make safer purchasing choices. Stay tuned for more interesting facts.

Interesting Facts

According to Chinese Residents Dietary Guidelines(2016), the recommended daily intake of oil for adult is 25-30g. In reality, we consume almost double the daily recommended amount ( 49g ).

Pouring cooking oil at room temperature is a great way to put out grease fire.

There are 6 major nutrients in the human body, 70% of the essential fatty acid comes from cooking oil.

Cooking oil is a cockroaches’ true love.

Reusing cooking oil for three times will result in a tenfold increase in carcinogens.

According to World Health Organization and Chinese Nutrition Society’s, a small amount of almond oil, olive oil, peanut oil and sesame oil intake is recommended for babies older than 6 months.

Test-it™ Reports

Test-it™ Standards

Traditional chemical Test 1.0 and existing regulations only reflect the basic requirements for market entry, not the products’ actual safety for consumption. Test-it™ applies first-in-the-world fish embryo toxicity (FET) test technology (Testing 2.0), enabling an effective and thorough examination on both acute and chronic toxicity in the tested products (effective up to several thousands of known toxicants to humans). We test and classify global products into three categories (Red, Yellow and Green Fish) through a comprehensive test system and scientific statistic analysis. We provide clear, direct test reports with lifestyle tips. Testing method varies with products. For the cooking oil test, the transgenic medaka embryo testing for chronic toxicants, zebrafish embryo testing for acute toxicants and ingredients check are applied.

Good performance under screening of acute toxicity, chronic toxicity and ingredients. Consumers can rest assured that the products are safe for purchase.

Meets the safety baselines under screening of acute toxicity, chronic toxicity and ingredients. Consumers are recommended to purchase with caution.

Below standard under screening of acute toxicity, chronic toxicity and ingredients. Consumers are recommended to purchase with extra caution.

Green Fish List
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Test-it™ Discovery

1、Coconut oil, olive oil, flaxseed oil and rapeseed oil shows less favorable results.

The results of olive oil and coconut oil (often perceived as healthy alternatives) are below average in this test. Among the 5 tested coconut oil samples, only 1 (20%) obtained Green Fish. 2 (40%) obtained Yellow Fish and 2 (40%) obtained Red Fish.

Among the 44 tested olive oil samples, only 7(19.15%) obtained Green Fish. 7(19.5%) obtained Yellow Fish and 29 obtained Red Fish.

Adulteration is the possible cause. It had been uncovered by the media that vast majority of Italian oil (80%) were adulterated. 35% of olive oil in China are imported from Italy. According to our test, the results of Italian oil are below average.

2、European Cooking Oils are the least favorable among all the origins.

3、Expensive oils are not necessarily safer .

The median price of the 115 samples is: 86.40 HKD/L.

One third falls in the price range of 50 HKD/L : 30 Green Fish, 10 Yellow Fish, 4 Red Fish.

One third fellas in the price range of 130 HKD/L: 13 Green Fish, 8 Yellow Fish, 10 Red Fish.

The Most expensive oil costs 140 times of the cheapest oil.

The cheapest oil costs 14.78 HKD/L, the most expensive oil costs 2,084 HKD/ L.

4、Limitation of cooking oils tests in existing regulation .

The standard for cooking oil tests under the existing regulations : BaP, total aflatoxin , acid value, peroxide value, total polar material, heavy metals: As, Cd, Cr, Hg, Pb, Sb, Sn.

Yet the existing regulations failed to reflect the following harmful substances that could potentially be found in cooking oils:

Toxic lipid oxidative derivatives,Pesticides ,Phyto toxins,Preservatives.Test-it™'s world leading technology Testing 2.0 can cover the above harmful substances.

5、In this sampling test, we purchased two expired oil samples from a store. One of them obtained Red Fish, which indicates high toxicity. Its toxicity is worse than some of the known gutter oils.

Test-it™ Tips


Conventional chemical test 1.0 and the basic regulations only reflects the basic requirement for a product’s market entry. The mission of Test-it™ is to further improve product safety with world leading technology Testing 2.0. Though horizontal analysis in similar products, Test-it™ provides consumers with information and data for better consumer choices. Products are categorised as Green Fish, Yellow Fish and Red Fish according to test results.

Test-it™ has developed a high standard as a third party consumer goods evaluation platform. Developed by an experienced research and development team and an advisory board of toxicology experts from 12 countries, Test-it™ references from the global standard of China, EU, the U.S., Japan, WHO and OECD. With the application of fish embryo toxicity (FET) test technology (Testing 2.0), The standard of Test-it™ could be higher than the existing regulations.

Sampling Method

Market research and product

Test-it™ selected 115 best selling cooking oil brands by analysing sales and attention span from the Test-it™ fans group. The research is conducted in both e-commerce platform and physical store.

  • E-commerce market research

  • Retailer market research

  • Sales volume and popularity

  • Selected products

Purchasing Method and Channel

All tested samples were purchased by Test-it as a common customer. Samples were purchased from the brands’ official beauty counters and their globally recognised sales channels ( official flagship stores ) on major E-commerce platforms ( JD, Tmall, Koala, Amazon) . All sample were purchased anonymously.In order to maintain neutrality and objectiveness, Test-it reports will not accept products submitted by manufactures.

  • Represent common consumers

  • Reliable sales channel

  • Anounymous purchase

  • No manufacturer sampling

Test Method

1. Transgenic medaka embryo testing for chronic toxicants

2、Zebrafish embryo testing for acute toxicants

3、Ingredients check

Vitargent adopts an exclusive ingredients screening system comparing restricted and high risk ingredients regulated by the CODEX Alimentarius of the WHO&FAO, USFDA, EU, Food and Drug Administration of Japan and China to further enhance product safety.

Ingredient Screening: Products must not contain any chemicals that are associated with health complications, eco-toxicity, or contamination by scientific safety evaluations, or are banned by the following governmental agencies and authoritative bodies.

US: USFDA’s ‘Summary of colour additives for use in the United States in foods, drugs, cosmetics, and medical devices’, ‘Prohibited & Restricted Ingredients’, and 'Everything Added to Food in the United States (EAFUS)'.

EU: European Commission Nos. 1333/2008, 1223/2009, 1129/2011, and 1130/2011, and Candidate List of substances of very high concern for Authorisation (SVHC) by European Chemicals Agency (2017).

China: China FDA’s ‘Safety and Technical Standard for Cosmetics’ (2015), and 'National food safety standards: food additive standard (GB2760-2014).

Japan: Japan’s ‘Standards for Cosmetics’ (2000), and 'Standard for use of food additives (2017)

WHO&FAO: CODEX Alimentarius

Results Analyzing Method

Category Medaka embryo testing for chronic toxicants Zebrafish embryo testing for acute toxicants Ingredients check
Pass WHO guideline on Acceptable Daily Intake (ADI) No LC50 (50% fish death) detected at highest concentration No banned or high concernedingredients

Pass WHO guideline on Acceptable Daily Intake (ADI) LC50 detected within highest centration to Vitargent category-based reference line No banned but contain high concerned ingredients

Fail (reading exceed ADI or over 50% fish death at Vitargent category-based reference line ) LC50 detected below Vitargent category-based reference line Contain banned ingredients

Selected Awards

Hong Kong Technological Achievement Award(2014) Davos Global Innovation Pioneer (2015) Geneva International Inventions 43rd Grand Prix Winner (2015) World Intellectual Property Organization Gold Medal (2016) APEC & GIC Future Maker (2016) Unreasonable Impact (2017)


  • 1. This report is conducted in random sampling method with laboratory standard operating procedures. All samples were purchased by our staff members through normal sales channels as a common customer.
  • 3. Green Fish indicates products show excellent quality in this test, listed in no particular order.
  • 4. All tests are conducted in Vitargent’s laboratories in Hong Kong, Taiwan and Belgium.
  • 5. This test was conducted under the principle of consumer goods comparison. The test results only indicate quality of the very sample. They do not reflect quality of other products under the same brand ( same or different models ) nor the products’ quality in different batches. The test results are provided solely for your personal, non-commercial use. No promotion or recommendation of any products are intended. By no means should the results be taken as medical advice. Consultation with doctors and healthcare professionals are recommended before employing the test results. The test results are not to be mistaken as medical advice for diagnosis, treatment, or recommendations for health conditions. We are not responsible or liable for anyone using the results of this report.
  • 6. The test results are provided solely for your personal, non-commercial consumer reference. The references of product qualities and recommendations hold no legal validity nor guarantee. Any business and consumer decision made by users is an independent action on their behalves. We are not responsible or liable for any dispute caused.
  • 7. You may not derive for commercial use or promotional actives any data from this report in any corporate and organisations, unless you obtain prior permission from Test-it™.
  • 8. All information and data in the report are dated to 23rd May, 2017, information are updated constantly according to the testing results released by other authorities .
  • 9.For more information, please see Terms, Conditions and User Agreement.
From · Test-it™· 2017/05/19