From sample to report
A small blood sample is placed on a collection card and sent to a designated laboratory. Follow the kit’s sampling, drying and shipping instructions exactly.
Check which laboratory performs the analysis, which method is used and how personal and health-related data are handled.
- read the complete instructions before sampling
- keep the test code separate from unnecessary personal data
- check the report date and definition of each reference range
Reading the result
Reports may show individual fatty-acid percentages, an omega-6:3 ratio or a provider-specific index. Definitions can differ between laboratories.
A result does not prove cause and effect and cannot tell you whether you have a disease. Discuss concerning findings or symptoms with a healthcare professional.
Repeat testing
Fatty-acid profiles do not change overnight. If you make a dietary change, use the provider’s guidance and professional advice to choose a meaningful retest interval.
Use the same method under similar conditions where possible, and never change prescribed treatment solely because of a home test.
Fatty acid tests do not all measure the same thing
A laboratory may analyse whole blood, red blood cell membranes, plasma or a defined lipid fraction. These can reflect different biological compartments and time frames, so results from two methods are not necessarily directly comparable.
Before using a report, identify the sample type, analytical method, unit and the exact formula behind any index. Ask the provider for a method description when these details are unclear.
Sampling and comparability
An insufficient blood spot, a soaked or contaminated card, poor drying, and prolonged heat during shipping can affect sample quality. The collection kit’s expiry date and storage instructions also matter.
For repeat testing, the same laboratory, sample type and broadly similar conditions offer the best comparability. Record the collection date, product and daily amount, but never change medication solely because of a home result.
- same laboratory and method
- documented daily amount and duration
- keep the original report and collection date
A practical order for reading a report
First confirm that the sample was accepted. Next identify the sample type and definitions. Then review EPA, DHA and any composite index separately; finally read how the reference range was created and intended to be used.
A coloured band or rating is simplified communication. It may not show measurement uncertainty, inter-laboratory variation or personal clinical context. The underlying number and definition matter more than an isolated ‘good’ or ‘bad’ label.
Trends, privacy and reasonable conclusions
A series of results is more useful when meaningful changes are documented: diet, product, dose, consistency and any relevant life or health circumstance. This makes it easier to interpret a trend without pretending it proves cause and effect.
A test identifier and report can be health-related personal data. Check who can access it, how long it is kept, whether it crosses borders and how deletion can be requested. Share it with a partner only if you actively choose to do so.