Frequently asked questions (FAQ) test

BLUESTAR® reagent

Yes, BLUESTAR® Forensic can react on very old blood. It has been successfully used to detect traces dating back more than 7000 years. It is common for BLUESTAR® Forensic to be used to reveal traces of over 20 years.

The detection capacity of BLUESTAR® Forensic was measured at 1/100.000 (see study)

BLUESTAR® Forensic products should be stored in a dry environment in temperatures ranging 39°F – 86°F

  • Kit : 24 hours minimum
  • Mini Kit: 3 hours minimum
  • Magnum: 24 hours minimum
  • Tablets: 3 hours minimum
  • Training: 3 hours minimum
  • Mini Training Kit : 3 hours minimum
3 years                                                   4years
Mini Kit                                                                   Kit
Mini Training Kit                                                   Magnum
Tablet 4 applications                                         Tablets 8 applications
Training Tablets 4 applications                       Training Tablets 8 applications
 
 
  • Kit : 24 hours minimum
  • Mini Kit : 3 hours minimum
  • Magnum : 24 hours minimum
  • Tablets : 3 hours minimum
  • Training Tablets : 3 hours minimum

The reaction of BLUESTAR® Forensic is immediate upon application and last 30 seconds to 2 minutes depending of the blood dilution and the material

BLUESTAR® Forensic reacts to human or animal hemoglobin and synthetic blood containing hemoglobin.

 

Yes, BLUESTAR® Forensic will react to all hemoglobin

BLUESTAR® Forensic can leave invisible residues. It is best to clean treated surfaces with water and a sponge or washcloth.

BLUESTAR® Forensic can produce reactions in the absence of blood. This reaction, called false positive, will occur on contact with certain acrylic paints, varnishes, chlorine products, etc. This reaction is however very different from the reaction on blood.

With practice, you won’t be able to mistake a blood reaction for a false positive. (page false positives)

You can use a bloodstained cloth. BLUESTAR® Forensic will react to human or animal hemoglobin.

BLUESTAR® OBTI

BLUESTAR® OBTI: 

  • The sensitivity of BLUESTAR® OBTI is 0.05 µg/ml.                
  • BLUESTAR® OBTI expiration date is 18 months, ex work factory 

BLUESTAR® Identi-HEM: 

  • The sensitivity of Identi-HEM® is 0.01 µg/ml. 
  • Identi-HEM® is more selective than the BLUESTAR® OBTI on mustelidea family blood. 
  • Identi-HEM® is delivered with a swab. 
  • BLUESTAR® Identi-HEM® is 36 months, ex work fact

BLUESTAR® OBTI should be stored in a dry environment in temperatures ranging 39°F – 86°F

BLUESTAR® OBTI: read a positive reaction within 3 – 10 minutes of activating test.

At 10 minutes you can confirm a negative test. Please refer to user guide.

Yes, you can spray several applications of BLUESTAR® Forensic spray on a suspected blood trace and receive results with BLUESTAR® OBTI.

No, BLUESTAR® OBTI only reacts positive in the presence of human hemoglobin.

BLUESTAR® Identi-HEM®

BLUESTAR® OBTI: 

  • The sensitivity of BLUESTAR® OBTI is 0.05 µg/ml.                
  • BLUESTAR® OBTI expiration date is 18 months, ex work factory 

BLUESTAR® Identi-HEM: 

  • The sensitivity of Identi-HEM® is 0.01 µg/ml. 
  • Identi-HEM® is more selective than the BLUESTAR® OBTI on mustelidea family blood. 
  • Identi-HEM® is delivered with a swab. 
  • BLUESTAR® Identi-HEM® is 36 months, ex work fact

BLUESTAR® OBTI: 

  • The sensitivity of BLUESTAR® OBTI is 0.05 µg/ml.                
  • BLUESTAR® OBTI expiration date is 18 months, ex work factory 

BLUESTAR® Identi-HEM: 

  • The sensitivity of Identi-HEM® is 0.01 µg/ml. 
  • Identi-HEM® is more selective than the BLUESTAR® OBTI on mustelidea family blood. 
  • Identi-HEM® is delivered with a swab. 
  • BLUESTAR® Identi-HEM® is 36 months, ex work fact

The collected sample is stable at room temperature (4°C to 30°C) but should be tested within 7 days.

Yes, you can spray several applications of BLUESTAR® Forensic on a suspected blood trace and receive results with BLUESTAR® Identi-HEM®

No, BLUESTAR® Identi-HEM® only reacts positive in the presence of human hemoglobin.

BLUESTAR® Identi-PSA®

BLUESTAR® Identi-PSA® should be stored in a dry environment in temperatures ranging 39°F – 86°F

Read the result after 10 minutes. Do not interpret after 15 minutes. Please refer to user guide.

BLUESPRAY®

Applications: up to 2.5 applications = inserting and emptying BLUESTAR® Magnum bottle 2 ½ times.

Propulsion capacity: up to 300 ml or 10 oz

BLUESPRAY® may be tilted more than 45° to spray on horizontal objects or surfaces while providing continuous and even distribution of fine mist spray.