STR Profiling

What is STR Profiling?

STR profiling is a forensic DNA analysis method that examines 16 specific short tandem repeat (STR) loci, unique to individuals, by counting the repetitions in their DNA to create a distinctive profile for identification. The STR method for authentication of human cell lines is detailed in ANSI/ATCC ASN-0002-2021 - Authentication of Human Cell Lines: Standardization of Short Tandem Repeat (STR) Profiling. 

 
STR profiling uses 16 known repeated sections or loci present in the DNA. Each peak in the profile represents one of these 16 loci and is given a numerical value. There are two values for each locus, one value coming from each allele. By entering the numerical scores for each loci into the AuthentiCell Database, scientists can confidently confirm the identity of their cells. 

Interpreting STR Profiles

Read more about interpreting STR profiles

Steps for Sample Submission 

Read the complete guide to complete and submit a sample submission form here.

AuthentiCell™ Test Kit 

• The AuthentiCell™ testing kit is a quick, low-cost, and easy-to-use identity test for human cell lines. There is no need to extract DNA; just pipette cells directly onto the FTA card provided and mail it to our testing center - no dry ice needed.   

Please note: Our AuthentiCell™ Testing Kit is currently unavailable, we hope to resume this service in 2026. This page will be updated when the service is available.