# DNA test reveals how your body handles drugs

> Pharmacogenomics testing uses a cheek swab to identify which medications work best for your genetics.
- Title: DNA test reveals how your body handles drugs · Valleynewslive
- Summary: Pharmacogenomics testing uses a cheek swab to identify which medications work best for your genetics. A simple genetic test can show which medications may…
- Keywords: pharmacogenomics, pgx testing, genetic testing, medication response, personalized medicine, phd lab, charlotte north carolina, beverly kerr, dr troy veale, dna testing, drug interactions, african american health
- Source: Valleynewslive — https://valleynewslive.com/2026/09/17/this-genetic-test-could-help-identify-how-you-respond-medication
- Published: 2026-09-17T12:15:19.98+00:00
- Read time: 2 min
- Topics: pharmacogenomics, pgx testing, genetic testing, medication response, personalized medicine, phd lab, charlotte north carolina, beverly kerr, dr troy veale, dna testing, drug interactions, african american health
## Why drugs affect people differently
Everyone's DNA is slightly different, which means the same medication can work well for one person but cause harmful reactions in another. Pharmacogenomics, or PGx, is a genetic test that identifies these differences.
## How the PGx test works
A simple cheek swab collects your DNA, which a lab examines to show which medications are safe for your genetics and what dosage is best. Results help doctors avoid prescriptions that could harm you.
## Cancer survivor cut medications from 14 to 2
Beverly Kerr was taking 14 different medications after cancer treatment and suspected they were working against each other. A PGx test revealed hydralazine contradicted her genetics and was causing dizzy spells.

> In two years I went from 14 to two
## Caregiver finds clarity for mother's care
Lanaire Malone's mother had suffered strokes and cancer and was experiencing medication issues. The PGx test revealed problems with her current prescriptions, giving Malone confidence to discuss changes with her doctor.

> as a caregiver it really gives clarity and confidence
## Lab founder lost his mother to drug interactions
Dr. Troy Veale, CEO of PHD Lab, started offering PGx testing in 2023 after his mother died in 2016 while on 13 medications. He believes the test could have helped her.
## Test works for many conditions
PGx testing helps patients with pain management, respiratory issues, diabetes, lupus, and arthritis. The test applies to anyone from birth to age 150 because your genes don't change.
## Cost and doctor skepticism remain barriers
PGx tests cost between 800 and 1,200 dollars if insurance doesn't cover them, though PHD Lab charges 699 dollars. Some doctors lack confidence in the results because they haven't fully studied the science.
## Genetics is only part of the picture
While genetic makeup matters, the Cleveland Clinic notes that diet, exercise, alcohol use, and current medications also affect how your body processes drugs. Doctors must consider all these factors together.
## Key takeaway

A simple genetic test can show which medications may harm you and help doctors choose safer, more effective prescriptions tailored to your DNA.