Frequently asked questions (FAQ) BLUESTAR® reagent

> Does BLUESTAR® Forensic react on ancient blood ?

Yes. BLUESTAR® Forensic can reveal very old blood traces. It has been successfully used on samples over 7,000 years old. It is also commonly used to detect bloodstains that are more than 20 years old.

> What is the detection limit of the BLUESTAR® Forensic?

The reagent can detect blood diluted up to 1:100,000.

> Does BLUESTAR® Forensic require special storage conditions ?

Yes. Store in a dry place at temperatures between 39°F and 86°F (4°C to 30°C).

How long does BLUESTAR® Forensic remain active after mixing?

  • Kit: Minimum 24 hours
  • Mini Kit: Minimum 3 hours
  • Magnum: Minimum 24 hours
  • Tablets (4 or 8): Minimum 3 hours
  • Training versions: Minimum 3 hours

> What is the shelf life of BLUESTAR® Forensic ?

  • Mini Kit: 3 years
  • Kit: 4 years
  • Mini Training Kit: 3 years
  • Magnum: 4 years
  • Tablets (4 & 8 applications): 4 years
  • Training Tablets (4 & 8 applications): 3 years

> How long is the active life of BLUESTAR® Forensic once mixed ?

  • Kit : 24 hours minimum
  • Mini Kit : 3 hours minimum
  • Magnum : 24 hours minimum
  • Tablets : 3 hours minimum
  • Training Tablets : 3 hours minimum

> How long does the chemiluminescence last after spraying?

The reaction is immediate and lasts from 30 seconds to 2 minutes, depending on the substrate and blood dilution.

> Does BLUESTAR® Forensic react with synthetic blood?

Yes. BLUESTAR® Forensic reacts with human and animal hemoglobin, as well as synthetic blood containing hemoglobin.

> Will BLUESTAR® Forensic detect all types of blood?

Yes. It reacts with any blood containing hemoglobin — human, animal, or even insect (e.g., mosquito).

> Does BLUESTAR® Forensic leave stains after use?

It may leave invisible residues. Clean the surface with water and a sponge or washcloth after application.

> How should I clean a surface after using BLUESTAR® Forensic?

Use a soapy sponge to wash the surface, followed by a clean damp sponge to remove any soap residue.

> What does a false positive look like ?

False positives may occur with certain substances such as varnish, some acrylic paints, and bleach. However, with experience, a technician can easily distinguish them from true blood reactions. The luminescence from false positives is usually weaker and shorter.

> How can I perform a positive control test before using BLUESTAR® Forensic?

You can apply the reagent to a bloodstained cloth. It will produce a positive luminescent reaction with human or animal blood.