Genetic tests can only show a slight probabilty of higher needs. For knowing your actual need only repeated blood-work will show the correct dose. In the example report thex talk for example about reduced conversion of beta-carotene to preformed vitamin A. To know that this probabilty is expressed in you, you still would have to test serum retinol, and then repeatedly to find the correct dose of retinol to circumvent that reduced conversion.
In the example report they talk about 30 such genes. Though some of those probabilties can be known to be expressed - or not - through direct observations or experimenting. You still would need to test directly in blood: homocysteine, methlymalonic acid, vitamin B6, omega-3 index, vitamin D3, retinol, microbiome, cholesterol-, thyroid-, androgen-, kidney-, liverenzymes-, electrolytes-, glucose-, CBC-panels, etc. - to find if a gene-mutation IS expressed, and repeatedly to titrate the correct doses of nutrients you need.
Therefore you can simply skip the gene-test, save its money for getting serious in assessing comprehensively your nutrient status by blood work. Which is essential to know your actual needs (a gene test can't tell). And bloody expensive if done repeately as is often needed in itself.