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2026.04.10
Bloodstain Test
What is a Bloodstain Test?
A forensic test to confirm whether human blood is included in evidence at the scene of an affair or incident.
It is possible to determine whether a stain on clothing or objects is blood.
Furthermore, if used with a DNA test, it is possible to confirm whose blood it is.
Sensitivity and Specificity of Bloodstain Testing
If 0.01 ml or more of blood is present, it is possible to highly accurately determine whether a stain is human blood.
Because it does not react to saliva or animal blood, it is a molecular biological test that clearly identifies only human blood.
In addition, if the DNA from the evidence is preserved, it is possible to investigate the donor of the bloodstain through a subsequent DNA test. *
* It cannot be determined in advance whether DNA can be extracted from the evidence until the DNA test is performed.
Therefore, even if preservation processing is performed, DNA test results may not be obtained.
Testing Method for Bloodstains
We use an immunostaining method to confirm whether stains on clothing, tissues, etc., contain proteins specific to human blood.
It is best to send the stained items as they are.
However, if items such as wallpaper or car seats are difficult to mail, testing is also possible using samples wiped with a dedicated swab.
Limitations of Bloodstain Testing
We employ a testing method equivalent to that used by the FBI to determine the presence of human blood with high accuracy and high sensitivity.
However, if the amount of the stain is extremely small (less than 0.01 ml), it may be negative even if blood is present.
Merits of the Bloodstain Test by seeDNA
✅ Low Cost
Free round-trip shipping
No additional fees
✅ Fast
Same-day shipping for orders during business hours
Results reported as early as the next day
✅ Peace of Mind
Free consultation with experts even on weekends
ISO international quality standard certified
Effects of Bloodstain Testing
Bloodstain testing is one of the representative forensic tests frequently used in criminal investigations.
If even a trace amount of blood is included in the evidence at the scene, it is possible to scientifically prove that it is blood.
The results are expected to have high evidential value even in trials or mediations.
In addition, preserving the DNA extracted from the sample can lead to confirmation of the DNA profile of the evidence.
Even if it does not lead to individual identification, the fact that a third party's blood was present can be a significant basis for incidents or affairs.
Virtual Laboratory Tour
You can view the inside of seeDNA's Tokyo Lab using Google Indoor View.
Inspectors with an average of over 10 years of research experience conduct tests using the latest systems.
Test with Privacy in Mind
In forensic testing, privacy protection is essential regardless of civil or criminal cases.
If you want to request a test without worrying about your family or those around you, please consult seeDNA, a P-mark certified institution.
Testing Process
After ordering, we will ship the test kit.
Please return the stained clothing as is, or a sample collected using a dedicated swab (*1), in the enclosed return envelope.
*1: For large items that cannot be mailed, you can test by wiping the stain area 200 to 300 times with a dedicated swab provided by us.
Alternatively, it is not a problem to cut out a larger portion of the stained area and send it.
1. Order
2. Kit Arrives
3. Place evidence in kit,
and mail it
4. Testing Begins
5. View Results
Cost and Duration of Bloodstain Testing
| 費用 | 19,800 yen (1 item) / +15,000 yen for each additional item after the first |
|---|---|
| 期間 | Standard: 5 days |
| * Due to a concentration of requests, the speed option is currently suspended. | |
| お申し込み |  Apply / Purchase Kit |
* The testing period is calculated based on weekdays excluding weekends and holidays.
* All prices include tax and round-trip shipping.
Customer Voices
Satisfied Voices
2029reviews
■ Satisfied (2029 / 2069 reviews)
■ Dissatisfied (40 / 2069 reviews)
We reply to all 2069 customer reviews received directly or via SNS/Google and publish them as capture images on our homepage.
Since we started aggregating reviews in 2015, we have received 2029 'Satisfied' ratings.
We publish all surveys and opinions received from our customers, including both satisfied and dissatisfied voices.
If any of the following ① to ③ apply, it is counted as a 'Dissatisfied' opinion.
- 1 to 3 stars on Google reviews
- Selecting 'Dissatisfied' in Q1 of the survey
- More than 1/3 of the text in SNS or email is negative
Inquiries and Support
Please feel free to contact us if you have any questions or concerns about the test.
Frequently Asked Questions
Q.What is a bloodstain test?
A.
Bloodstain testing is a forensic test that scientifically determines whether stains on evidence are human blood. It uses an immunostaining method to detect specific proteins present only in human blood. Because it does not react to saliva or animal blood, it accurately identifies human blood (1).
Q.What is the detection limit of a bloodstain test?
A.
It can be detected if a minimum of 0.01ml (10 microliters) of blood is present. However, for trace amounts of blood less than 0.01ml, it may return a negative result even if blood is present. seeDNA employs the same testing method as the FBI, achieving highly sensitive and specific judgments.
Q.Can bloodstain testing identify whose blood it is?
A.
A bloodstain test alone can only determine 'whether it is human blood or not'. However, if DNA is preserved from the evidence during the test, it is possible to confirm the DNA profile through an additional DNA test and identify whose blood it is. Even if not identifiable, the fact that a third party's blood was present can serve as legal evidence in court.
Q.How much does it cost and how long does it take for a bloodstain test?
A.
seeDNA's bloodstain testing costs 19,800 yen per sample (tax and round-trip shipping included), with an additional cost of 15,000 yen for each subsequent sample. Results are typically reported in 5 business days (excluding weekends and holidays), and if ordered during business hours, the test kit is shipped the same day (2).
Q.What kind of samples (evidence) can be used for a bloodstain test?
A.
It is best to mail stained items such as clothing, tissue paper, or bed sheets as they are. If mailing is difficult, such as for wallpaper or car seats, we also accept samples obtained by rubbing the stain 200-300 times with a dedicated swab. You can also cut out the stained portion and send it.