STR Profiling Test
Also known as: Short Tandem Repeat Analysis, DNA Fingerprinting, DNA Profiling
STR Profiling Test test available at DNA Labs India for ₹6,500. Uses PCR, Capillary Electrophoresis on Extracted DNA samples. Results in Reports are typically delivered within 10 days after sample collection. Urgent processing may be available on request.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
The primary purpose of STR profiling is to generate a unique DNA profile for an individual. This profile can be used for: 1) Forensic identification – matching crime scene evidence to suspects or victims. 2) Paternity testing – confirming biological father-child relationships. 3) Immigration cases – proving family relationships for visa applications. 4) Missing person identification – helping in disaster victim identification. 5) Genetic genealogy – tracing ancestry and family history. 6) Legal disputes – resolving inheritance or custody cases. STR profiling provides conclusive evidence with a high degree of accuracy, making it an indispensable tool in modern medicine and law.
- Test Code
- 6280
- CPT Code
- CPT 81479
- ICD Code
- Z00.00
- Price
- ₹6,500
- Sample Type
- Extracted DNA
- Result Time
- Reports are typically delivered within 10 days after sample collection. Urgent processing may be available on request.
- Fasting Required
- No
- Method
- PCR, Capillary Electrophoresis
Sample Collection
No special preparation is required. Avoid eating or drinking for at least 30 minutes before a buccal swab to reduce contamination. Inform the lab if you have had a blood transfusion or bone marrow transplant within the last 6 months.
Method: Blood or buccal swab
Laboratory Analysis
For buccal swab, a sterile cotton swab is rubbed gently inside the cheek for about 30 seconds. For blood sample, a standard venipuncture is performed. The procedure is quick and painless.
Report Delivery
You can resume normal activities immediately. The sample will be sent to the laboratory for analysis. Results are typically available within 10 days.
Timeline: Reports are typically delivered within 10 days after sample collection. Urgent processing may be available on request.
Patient Instructions
About This Test
Who Should Get This Test
The primary purpose of STR profiling is to generate a unique DNA profile for an individual. This profile can be used for: 1) Forensic identification – matching crime scene evidence to suspects or victims. 2) Paternity testing – confirming biological father-child relationships. 3) Immigration cases – proving family relationships for visa applications. 4) Missing person identification – helping in disaster victim identification. 5) Genetic genealogy – tracing ancestry and family history. 6) Legal disputes – resolving inheritance or custody cases. STR profiling provides conclusive evidence with a high degree of accuracy, making it an indispensable tool in modern medicine and law.
How to Prepare
- Do not eat, drink, smoke, or chew gum for 30 minutes before buccal swab collection
- Rinse mouth with water before collection if needed
- Ensure sample is labeled correctly with patient details
- For blood samples, use EDTA tube and mix gently
- Store sample at room temperature if processed within 24 hours, otherwise refrigerate
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"STR profiling is a gold standard for identity testing. It is crucial to choose an accredited lab to ensure legal and clinical validity."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Sample not labeled or mislabeled
- Insufficient quantity of DNA
- Hemolyzed blood sample
- Sample contaminated with foreign material
- Sample received after prolonged storage without proper conditions
Understanding Your Results
Profile is complete and suitable for comparison
Individual inherited the same allele from both parents
Possible contamination or mixed sample; repeat analysis may be needed
Possible DNA degradation or PCR failure; consider re-extraction
If you are considering STR profiling for paternity or legal reasons, consult a genetic counselor or legal advisor. For forensic purposes, law enforcement will guide you. If you have concerns about genetic testing, discuss with a healthcare provider.
Limitations
- ⚠STR profiling cannot determine exact age or physical appearance
- ⚠Results are probabilistic; extremely rare coincidences possible
- ⚠Requires high-quality DNA; degraded samples may fail
- ⚠Legal cases may require chain-of-custody documentation
- ⚠Not a substitute for medical diagnosis of genetic disorders
Risks & Considerations
- ●Minimal risk of bruising or infection at blood draw site
- ●No significant medical risks associated with buccal swab
- ●Psychological impact of paternity or identity results
Interfering Factors
- ●Contamination of sample with foreign DNA
- ●Degraded DNA due to improper storage or handling
- ●Presence of PCR inhibitors (e.g., heme, humic acid)
- ●Insufficient DNA quantity
- ●Mixed DNA samples (e.g., from multiple individuals)
Compare With Similar Tests
| Test | STR Profiling | Whole Genome Sequencing | SNP Microarray | Mitochondrial DNA Testing | Y-Chromosome Testing |
|---|---|---|---|---|---|
| Comparison | STR Profiling |
Frequently Asked Questions
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Your Data Privacy
Your medical data is protected under Indian law.
✓ Stored in India: All patient records are stored on servers located in India. No data is transferred outside the country.
✓ DPDP Act Compliant: Under the Digital Personal Data Protection Act 2023, you can request deletion of your records at any time by contacting support.
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