Skip to main content

D-Tec CB

This page contains information on D-Tec CB for veterinary use.
The information provided typically includes the following:
  • D-Tec CB Indications
  • Warnings and cautions for D-Tec CB
  • Direction and dosage information for D-Tec CB

D-Tec CB

This treatment applies to the following species:
Company: Zoetis


Slide test for Brucella canis antibodies

General Information And Intended Uses

The rapid slide agglutination test (RSAT) for the diagnosis of Brucella canis was described by George and Carmichael (Proc. Council Res. Workers in Animal Disease, November 1973). The basis of the test is direct agglutination of the killed stained antigen by Brucella canis antibodies.

Canine brucellosis is a chronic infection with Brucella canis that causes generalized lymphadenitis and mild to severe reproductive symptoms. Prostatitis, epididymitis, scrotal dermatitis, testicular atrophy and impotence can be present in the male; abortion typically in the final two weeks of gestation, resorption, infertility, and vaginal discharge can be present in the female.

The test has been shown to presumptively diagnose infection with Brucella canis by detecting specific antibody that is formed 1 to 4 weeks after infection. The basis for serodiagnosis of canine brucellosis is the 2-Mercaptoethanol Tube Agglutination Test (2ME-TAT) and the Rapid Slide Agglutination Test (RSAT). The 2ME-TAT and RSAT have demonstrated excellent correlation in experimentally infected dogs. In field situations, it has been recognized that an occasional healthy dog, culturally negative for Brucella canis will react positively in the RSAT, but not in the 2ME-TAT. The 2-Mercaptoethanol - Rapid Slide Agglutination Test (2ME-RSAT) has been developed in an attempt to eliminate discrepancies between the RSAT and the 2-ME-TAT.

Certain non-specific agglutinins, reported to occur in the sera of normal dogs, are removed from canine sera when 2-mercaptoethanol is employed in the 2ME-TAT. Because of this occurrence, 2-mercaptoethanol is employed in the modified Rapid Slide Agglutination Test procedure. The reagents are used to presumptively diagnose infection with Brucella canis in dogs. Positive results require additional confirmation.

Sample Information

Serum is required. Test may not be used with whole blood or plasma.

Kit Composition And Conservation

Kit contains material sufficient to perform 25 tests





Positive Control (Red Cap - preserved with Sodium Azide)

1 x 1.3 mL


Antigen (Black Cap - preserved with Sodium Azide)

1 x 2.5 mL


2-Mercaptoethanol (Yellow Cap)

1 x 2.5 mL


Reaction cards



Disposable Pipettes



Stir Sticks


Antigen and accompanying antiserum have been standardized and should be used together. Store all reagents at 2 - 7°C. Do not allow reagents to stand at room temperature for excessive periods of time. Reagents should not be frozen.


a) 1.3 mL Positive Control (Red Cap)

b) 2.5 mL Antigen (Black Cap)

c) 2.5 mL 2-Mercaptoethanol (Yellow Cap)

d) 13 Reaction cards

e) 25 Disposable Pipettes

f) 25 Stir Sticks

Warnings To The Users Of Reagents

Brucella canis is infectious to humans. Caution should be exercised when handling serums to be tested.

Note: Allow all components to come to 21 - 25 °C before starting.


● Follow proper sample collection procedures.

Test Procedure

A. Rapid Slide Agglutination Test (RSAT)

1. Cut card on dotted line. Two circles are used to perform each test.

2. Place one drop of Reagent A, Positive Control (Red Cap), in one circle of the supplied card.

3. Use a disposable plastic pipette to place one drop of test serum in another circle. Each test kit contains disposable pipettes to prevent serum cross contamination. Do not dispose of pipette until the 2ME-RSAT is completed.

4. Thoroughly mix Reagent B, Antigen (Black Cap), by vigorously shaking the vial. Add one drop of the Reagent B, Antigen, close to each serum drop, being careful not to touch the serum with the dropper tip.

5. Mix each antigen-serum combination with a separate end of a stir stick, spreading to fill the circular area. Do not allow the positive control test to touch the unknown serum sample.

6. Gently rock the card for 10-15 seconds. Place on a flat surface and observe for agglutination for no longer than two minutes. If the serum is negative (absence of agglutination), the animal is considered not to be infected with B. canis. If the card tests positive, perform the 2ME-RSAT.

B. 2-Mercaptoethanol-Rapid Slide Agglutination Test (2ME-RSAT)

1. Add 2 drops of Reagent C, 2-Mercaptoethanol (Yellow Cap) to a tube containing 2 drops of the serum to be tested, and mix well.

2. Place 1 drop of this mixture on a new reaction circle.

3. Add 1 drop of Reagent B, Antigen as above to the serum solution and mix with stir stick as described above.

4. Gently rock the card for 10-15 seconds. Place on a flat surface and observe for agglutination for no longer than 2 minutes. When the RSAT-positive sample also tests positive by 2ME-RSAT, the animal is presumptively diagnosed as being infected with B. canis. Blood should be subjected to cultural examination for B. canis. When the RSAT-positive samples tests negative by 2ME-RSAT, the animal may be in the early stage of B. canis infection, or alternatively, its serum may contain non-specific agglutinins to B. canis. To distinguish between these two conditions, a second serum sample should be collected in approximately thirty days and retested by the 2ME-RSAT procedure.

Only if this sample tests positive should the animal be presumptively diagnosed as having B. canis infection. Blood should then be subjected to cultural examination for B. canis.

Definitive diagnosis of canine brucellosis is based upon isolation of B. canis from the animal.

Interpretation Of Results

NEGATIVE: no agglutination within two minutes

POSITIVE: Agglutination within two minutes

Zoetis Inc., Kalamazoo, MI 49007, USA

VLN/PCN 190/5021.00



Zoetis Belgium SA, Rue Laid Burniat 1, 1348 Louvain-La-Neuve, BELGIUM


CPN: 1115005.8

Telephone:   269-359-4414
Customer Service:   888-963-8471
THIS SERVICE AND DATA ARE PROVIDED "AS IS". DVMetrics assumes no liability, and each user assumes full risk, responsibility, and liability, related to its use of the DVMetrics service and data. See the Terms of Use for further details.

Copyright © 2023 Animalytix LLC. Updated: 2023-05-29