Affordable Sibling DNA Test $125 | Only The Price Is Cheap |

A Sibling DNA Test Determines Full Sibling – Half Sibling – No Relations!

We offer most accurate sibling tests (Up To 46 Markers) trusted USA lab.

What Is A Sibling DNA Test?

A sibling DNA test analyzes the DNA of alleged brothers or sisters to determine if they are full siblings, half siblings or not related.  This brother and sister DNA test can help prove or disprove paternity or maternity indirectly. DNA testing with siblings is the best option when the alleged father or mother is unwilling or unavailable to be tested. Our premium at home DNA test for siblings can analyze Up To 46 Markers, which is 50% more markers than our competitor’s 24 or 35 marker test. 

Furthermore, our sibling DNA test is the best solution to confirm or deny ®, ®, or’s ® genealogy test results. These heritage & ancestry kits use a database to indicate that you may have found a lost brother or sister, but most importantly we can prove or disprove the findings. 

What Will The Siblingship DNA Testing Results Prove?

The results will show if the participants are full siblings (both parents in common), half siblings (one parent in common) or not related as brother and sister. This is accomplished by actually comparing one person against another, and not just by using an ancestry or heritage database.  ***AS SEEN ON TV***, YOU CAN TRUST OUR LAB, DON’T RISK FALSE RESULTS!

Very Affordable Prices – FREE 2-WAY RUSHED SHIPPING Fast, Accurate, Private Results

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Full Siblings – Half Siblings – Not Sure If Related

A full sibling test assumes there is one known parent in common and tests to conclusively determine if both parents are shared.

A half sibling test assumes one parent is different and will determine if one or no parent is shared.

A test for both full and half sibling will let you know whether one, both, or no parents are shared. If you are not sure whether the mother and or father are shared, performing both a full and half sibling DNA test gives the most complete picture of the relationship. Our precise results may provide the adoption answers you seek from a lab you can trust.

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How accurate is DNA testing for siblings?

Sibling DNA testing is 100% accurate and can produce very conclusive results.  Generally,  the analysis can be performed with only two or more brothers or sisters, however we recommend adding any available known parent(s) to help increase conclusiveness.  Please feel free to call us at (877) 786-9543 for consultation.

In certain situations, if no known parent(s) can be added to the DNA test, you may consider the option to analyze additional DNA markers (Up To 46) to ensure you get the most conclusive answer possible.

The Testing Process Is Easy:

Upon receipt of order, we will rush you a FREE sterile DNA collection kit

Sample Collection:
Sampling is done through a cheek swab.

Sample Analysis:
When  samples arrive at lab, you will be notified via email.

Results Reporting:
Results are emailed and/or mailed to the address on file.

Can you also test other family members?

YES! A grandparent DNA test can be performed with an alleged grandparent(s) and grandchild.  An avuncular DNA test  is performed with a full sibling of the alleged parent (Aunt/Uncle). Lastly, you may also perform a family reconstruction DNA test if multiple paternal relative are available.

Can you test types of genetic samples?

YES, ear wax, finger or toe nail clippings, hair (w/ root ball), mucous on a tissue, and toothbrushes are common forensic DNA samples. For more information & pricing please call us at toll free (877) 786-9543.

Non-Legal Sibling Test

Legal Sibling Test


YES, a sibling DNA test can conclusively determine you’re a full or half sibling thus proving or disproving paternity.

No, in-fact unless the individuals are identical twins all siblings have unique genetic profiles.  The combination of genetic markers inherited from both parents makes every brother or sister unique.

When testing brothers for paternity, a Y-STR test is a good option to consider. The Y-STR male line DNA test compares the unique Y-Chromosome (Like A Fingerprint) every father passes to his male child. A Y-STR analysis will always produce a conclusive “Yes” or “No” as to whether or not the alleged male sibling comes from the same male line.

Likewise, an mtDNA female lineage test provides a conclusive answer regarding a relationship on the maternal side.

When someone wants to see if they are a sibling or  a cousin, a sibling DNA test may not produce the most conclusive result. Therefore, we recommend instead, a paternity or maternity test with the parent in question as the best solution.  Call us at (877) 786-9543, and we can help guide you to the best DNA test.

YES! However, our mission is to first provide the most reliable & accurate results at the cheapest prices, and as quickly as possible.

Some promise one day results, but in reading the fine print, their disclaimer says it can take 3-5 days.

Having said that, we do offer a 1-day processing option if at least 1 mom is included in the test. (Please call to request 1-day service option)

Sometimes you have to do the DNA collection right away or lose the opportunity to obtain a sample. In such cases, you can use regular Q-tips  for the collection, however this is not ideal. For this reason, PaternityUSA will rush a medically sealed sterile kit to you FREE.

YES,  commonly used forensic DNA samples include ear wax, hair (must have the root ball attached), mucous on a tissue, finger or toe nail clippings, and toothbrushes. Please contact us at (877) 786-9543 for more info.

Orders before 12:00 PM EST, will be rushed a sterile kit via trackable USPS for FREE Monday through Friday to physical addresses in the contiguous USA. Orders received after t2:00 PM EST ship the following business day. We do have expedited shipping options available during checkout. Please note that for expedited shipping a physical address is needed. We cannot expedite to a PO Box.

If siblings are in different cities or states, when ordering, simply provide the additional address, and we will send the other participant a separate collection kit. The reference numbers and bar codes link the samples when received in lab. Secondary address cannot be NY or international. Please contact us with international shipping questions at (877) 786-9543.

YES, our legal sibling packages  are valid in cases for child support, visitation rights, to change name on the birth certificate, estate, wills, probate situations, and/or any other type case where proving the relationship is required.

Further, if you need the results for immigration, CRBA, passport, the embassy, USCIS/ICE or Dept. Of Homeland Security as evidence of the biological relationship, then order the immigration package.

We Look Forward To Serving You!

Order Test – Easy As 1 2 3


Choose the type of relationship that you need DNA answers for, and who is available to participate.


Decide if you need answers for just personal knowledge or if you need answers for court or other legal matter.


Place order online on our secure shopping cart with credit card or PayPal.

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