What Columbia Families Are Saying
Trusted by Families Across the Midlands
The Science
Are Your Twins Identical or Fraternal? Get the Answer Once and For All
One question we hear all the time from Columbia families goes something like this: “We’ve always wondered, but nobody could ever tell us for sure.” A twin zygosity DNA test gives you the definitive answer — no more guessing based on looks.
Here’s how it works. Identical (monozygotic) twins came from a single fertilized egg that split — they share 100% of their DNA. Fraternal (dizygotic) twins came from two separate eggs — they share about 50% of their DNA, the same as any other siblings. Our test compares specific DNA markers between your twins to determine which type they are with 99.9% accuracy. The result is always definitive — there is no gray area.
This isn’t just curiosity — although curiosity is a perfectly good reason. Knowing zygosity matters for medical care, organ and tissue compatibility, insurance documentation, and legal purposes. If one identical twin develops a genetic condition, their doctor needs to know the other twin shares that risk so early screening can begin.
Call us at 803-766-0036 and we’ll come directly to your home anywhere in Columbia or the Midlands. No clinic visit. No blood draws. Just a simple cheek swab and a clear answer.
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99.99%
Test Accuracy |
~15 Min
Collection Time |
2–3 Days
Results Turnaround |
1 in 3
Twins Are Identical |
No Blood
Cheek Swab Only |
Mobile DNA Testing — Columbia SC & the Midlands
Get The Answer Your Family Deserves In Three Simple Steps
We come to you — or visit our Columbia office by appointment.
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Start With a FREE ConsultationTell us about your twins and what you need the results for. We’ll walk you through the process and answer every question. |
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We Come to YouSchedule a time and place that works for both twins. Our collector arrives with everything needed — no clinic visit required. |
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Receive Your AnswerResults come back in 2–3 business days. Identical or fraternal — a clear definitive answer your whole family can rely on. |
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Before We Arrive How to Prepare for Your Twin Zygosity DNA TestThe good news: preparation is minimal. No blood draws, no needles, no doctor’s orders required. Here’s everything you need to do before we arrive. Have both twins in the same location. We come to you anywhere in Columbia — your home, a family member’s house, or our Columbia office by appointment. We just need both twins together at the same time, especially for legal-grade testing. No eating, drinking, or chewing gum for 30 minutes before we arrive. This keeps the cheek swab sample clean and uncontaminated. For infants and toddlers, schedule around a bottle or nursing — it matters for sample quality. Bring valid photo ID for every adult. Guardians need their own ID plus the twins’ birth certificates. No insurance or doctor’s referral needed. That’s it. Call us at 803-766-0036 and we’ll handle the rest — 24/7, same-day appointments available across Columbia and the Midlands. |
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Available 24/7
Ready to Find Out?
We come to your home anywhere in Columbia and the Midlands — or visit our Columbia office by appointment. Same-day scheduling available.
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What to Expect What Happens During the Collection VisitOur certified collector arrives at your home with a sealed collection kit from our AABB accredited labs. We verify the identity of each twin and any participating parent, photograph IDs, and complete the chain-of-custody paperwork right at your kitchen table. The cheek swab itself takes about 30 seconds per twin — a soft cotton tip gently rubbed inside the cheek. We’ve collected from babies in the NICU and toddlers who thought it was ticklish. Most babies don’t even wake up. It is completely painless at any age. Each twin gets their own clearly marked collection envelope, sealed and signed in your presence. You sign the chain-of-custody form as a witness. The whole appointment wraps up in 20–25 minutes. Samples ship immediately to an AABB accredited laboratory via secure tracked shipping. Results come back in 2–3 business days. Call 803-766-0036 anytime — we’re available 24/7. |
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Your Results Understanding Your Twin Zygosity ResultsYour report will state one of two conclusions: monozygotic (identical) or dizygotic (fraternal). There is no gray area. The genetic markers tested are so precise that the result is always definitive — 99.9% accuracy every time. Families across the Midlands are often surprised by what they find out. We’ve tested twins near Shandon who looked nothing alike and turned out to be identical. And look-alike pairs from Forest Acres who were actually fraternal. You truly cannot trust physical features alone. For medical purposes, the report gives your pediatrician or specialist exactly what they need. For legal purposes, our chain-of-custody collection ensures results are court-admissible across South Carolina — valid for custody cases, inheritance matters, and insurance documentation. Questions after your results come in? Call us at 803-766-0036 anytime — we’re available 24/7 and happy to walk you through every line of the report. |
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Book Online
Book Your Twin Zygosity DNA Test
Select a time that works for your family. We’ll come to your location anywhere in Columbia SC and the Midlands.
Columbia SC & the Midlands — Available 24/7
Schedule Your Twin Zygosity DNA Test Today
Odosek Lab Solutions comes to your home anywhere in the Midlands — or visit our Columbia office by appointment. Simple, painless, and definitive. Same-day appointments available.
Common Questions
Frequently Asked Questions About Twin Zygosity DNA Testing in Columbia
What exactly happens during a twin zygosity DNA test appointment in Columbia?
A member of our team comes directly to you — no clinic visit needed. We collect a simple cheek swab from both twins. The whole process takes about 15 minutes. Samples go straight to an AABB accredited lab for analysis. We serve families across Columbia and the Midlands, including neighborhoods like Rosewood. Call us at 803-766-0036 to schedule.
How long does it take to get twin zygosity DNA test results?
Results are typically ready within 2–3 business days after your samples reach the lab. We send your results directly to you once complete. If your test is for a legal purpose — like a custody case or inheritance matter — we follow strict chain-of-custody steps so results hold up in court. We’ll walk you through every step so you always know what to expect.
Can a twin zygosity DNA test be used for medical or legal purposes in Columbia?
Yes — physicians at Midlands-area facilities sometimes need zygosity confirmed before approving organ transplants or bone marrow procedures. Courts may require it for custody or inheritance cases. We only use AABB accredited laboratories and follow proper chain-of-custody protocols, making results legally admissible. Just tell us your situation when you call 803-766-0036.
Do both twins have to be present at the same time for the test?
For legal-grade testing, yes — both twins must be present together so we can follow proper chain-of-custody steps. For a personal peace-of-mind test, one visit is better than none, but we still prefer both twins together when possible. We come to you anywhere in Columbia, so just pick a time and place where both twins can be there. We work seven days a week including evenings and weekends.
Is there anything my twins need to do before the DNA sample is collected?
Yes, and it is simple — neither twin should eat, drink, smoke, or chew gum for at least 30 minutes before we arrive. That is all. Our team handles everything else when we come to your Columbia home or chosen location. For infants and toddlers, schedule around feeding time for the cleanest possible sample.
Why do some Columbia families get a twin zygosity test even when twins look identical?
Looks can be misleading — about one third of all twins are identical, but physical appearance alone cannot confirm it. Families in Columbia and across the Midlands often discover they assumed wrong for years. A pediatrician may ask for confirmation before making medical decisions. Knowing true zygosity helps doctors screen for shared genetic conditions early — that’s not just curiosity, it’s smart healthcare.