How DNA Testing Works | At-Home DNA Testing Guide | DNAOM
DNA testing guide

How DNA Testing Works

DNA testing examines genetic information from a collected biological sample to answer a specific question. Depending on the test, that may involve health-related genetic markers, inherited traits, dog breed identification, or pet genetic screening.

With DNAOM, the process is designed to be understandable from the start: choose the test that matches your goal, collect the sample according to the kit instructions, return it for laboratory processing, and review the report when analysis is complete.

At-home DNA testing kit and sample collection process
A clear four-step process Choose, collect, return, and review your results.
01
Choose your test

Start with the question you want the DNA analysis to address.

02
Collect your sample

Follow the instructions supplied with your specific test kit.

03
Laboratory analysis

Processing begins after your usable sample reaches the laboratory.

DNA sample collection materials prepared for laboratory testing
From kit to report

What happens during the DNA testing process?

The exact analysis varies by test, but most at-home DNA testing follows the same basic path. Understanding these stages before ordering makes it easier to select the appropriate test and follow the collection instructions correctly.

1

Choose a test for a specific purpose

Different DNA tests answer different questions. A genetic health test, for example, is designed for a different purpose than a dog DNA test. Start with the information you actually want to learn.

2

Collect the sample as instructed

Many at-home tests use a mouth or cheek swab, although collection methods can vary by product. Follow the instructions supplied with your kit carefully because a usable sample is necessary for successful processing.

3

Return the sample

Package and return the collected sample according to the directions provided with your test. Laboratory turnaround generally begins after the sample has been received rather than on the day you collect it.

4

Receive and review your report

After the required analysis is completed, your results are provided according to the reporting process for the test you ordered. The report should be interpreted within the scope and limitations of that specific analysis.

Behind the results

What happens after your DNA sample reaches the lab?

The laboratory stage is where the submitted sample is processed and the genetic information relevant to the ordered test is analysed. The exact laboratory method depends on the test itself.

This is also why turnaround estimates should normally be understood from laboratory receipt rather than from the date the kit was ordered.

LAB STEP 01

Sample received

The returned sample enters the laboratory workflow for the test that was ordered.

LAB STEP 02

Sample processing

The laboratory processes the usable biological material according to the requirements of the selected analysis.

LAB STEP 03

Genetic analysis

Relevant genetic markers or DNA information are examined according to the scope of the ordered test.

LAB STEP 04

Report prepared

The findings are organized into the report format associated with your test and made available through its designated results process.

Before you order

What DNA testing can — and cannot — tell you

A useful DNA test starts with realistic expectations. Results should be interpreted according to what the specific test actually analyses rather than treated as an answer to every health, ancestry, or pet-related question.

DNA testing can provide focused genetic information

  • Identify information covered by the specific genetic markers included in the ordered test.
  • Provide breed-related information when using an appropriate pet breed identification test.
  • Report genetic predisposition or inherited-risk context when that is within the scope of a health test.
  • Help you prepare more informed questions based on the information included in your report.

DNA testing has important limits

  • One test cannot answer every possible question about your DNA.
  • Genetic predisposition does not necessarily mean a condition is present or will develop.
  • Health-related genetic information should not be treated as a replacement for professional diagnosis or medical care.
  • Results should always be considered within the stated scope of the test you ordered.
Find your testing path

What type of DNA test are you looking for?

Once you understand how DNA testing works, the next step is matching the test to your goal. Explore the relevant DNAOM testing category below.

Health testing

Genetic health testing

Explore DNA tests focused on specific health-related genetic information, including methylation and selected genetic predisposition testing.

Explore genetic health tests
Canine testing

Dog DNA testing

Compare dog DNA options for breed identification, inherited disease screening, and other canine genetic reporting needs.

Explore dog DNA tests
Feline testing

Cat DNA testing

Explore feline DNA testing for inherited disease information and specific genetic screening such as PKD-related testing.

Explore cat DNA tests

Not sure which DNA test matches your goal?

Start with our test-selection guide or contact DNAOM with the question you want your results to help answer. We can direct you toward the most relevant testing category without making the process more complicated than it needs to be.