Ref.: HU-829 * 24 test

Ref.: HU-830 *   6 test

- This quick test presumes that a blood spot/trace is of human origin

-  A positive result indicates a strong likelihood for the presence of human blood

-  For forensic use

-  Each box contains 24 collection tubes and 24 test.

What is Hexagon OBTI ?:

A sample of the presumed human blood trace is transferred into the tube with transport medium. This mixture is added drop by drop to the test. A positive sample is typically detected within 2-5 minutes.

A single red line means the testing liquid is working fine but no human blood has been detected, two red/pink lines mean the test has detected human blood.

The test detects whole blood up to a dilution of 1 : 2,000,000. As little as 250 red cells are required for a positive result.

HEXAGON OBTI  is a two part test:

A collector tube with a chemical reagent for the blood sample

and a test bar.

Principle.

Human hemoglobin (hHb) in the sample reacts with a reagent consisting of red colored  particles and monoclonal anti- human Hb antibodies. The immunocomplex migrates to the test zone where it is captured by an immobilized second antibody directed against hHb forming a pink test line to indicate a positive result. Unreacted reagents migrate further and are bound in a second line by immobilized anti-mouse lgC antibodies. This red control line indicates proper function and correct handling of the test.

The new improved HEXAGON OBTI, easier to read thanks to its red lines is now capable of detecting 0.05 µg/ml hemoglobin and has a storagetemperature up to 30°C

False Positives

They were obtained with blood from primates (gorilla, and of some Mustelidae (weasel, badger).

The Blood of the following animals did not react with the Hexagon OBTI: cattle, pig, sheep, goat, horse, rabbit, chicken, duck,goose, turkey, guinea pig, red deer, cat, dog.

Technical information and studies are available