SD BIOLINE TB Ag MPT64 Rapid Test Procedure - MD Doctors Direct

One Step Identification of Mycobacterium tuberculosis Complex by RAPID Test
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As the test begins to work, you will see purple color move across the result
window in the center of the test device
Interpret the test results in 15 minutes after sample application.
Explanation of the test
Tuberculosis is a highly infectious disease caused by Mycobacterium tuberculosis
and potentially fatal disease of human. Biochemical, immunological and
molecular biological characterization of Mycobacterium tuberculosis has led to
the identification of several antigens which may be useful in the development of
improved diagnostic methods in order to discriminate between the M. tuberculosis
complex and mycobacteria other than M. tuberculosis (MOTT bacilli). M. tuberculosis
has been known to secrete more than 33 different proteins. One of the predominant
proteins, MPT64 was found in the culture fluid of only strains of the M. tuberculosis
complex. Recently, SD have developed a simple, rapid assay using mouse monoclonal
anti-MPT64 for rapid discrimination between the M. tuberculosis complex and MOTT
bacilli.
[Intended Use] “SD BIOLINE TB Ag MPT64” is a rapid immunochromatographic
identification test for the M. tuberculosis complex that use mouse monoclonal anti-
MPT64. This test kit can be easily used for rapid identification of the M. tuberculosis
complex in combination with culture systems based on liquid media without any
technical complexity in clinical laboratories.
[Principle] This test cassette consists of a sample pad, a gold conjugate pad, a
nitrocellulose membrane, and an absorbent pad. Mouse monoclonal anti-MPT64
were immobilized on the nitrocellulose membrane as the capture material (test line).
Another antibodies, which recognized another epitope of MPT64, conjugated with
colloidal gold particles were used for antigen capture and detection in a sandwich
type assay.
SD BIOLINE TB Ag MPT64 test device has a letter of T and C as “Test Line” and
“Control Line” on the surface of the case. Both the “Test Line” and “Control Line”
in result window are not visible before applying any samples. The “Control Line” is
used for procedural control. Control line should always appear if the test procedure
is performed properly and the test reagents of control line are working. As the
test sample applied in the sample well flow laterally through the membrane, the
antibody-colloidal gold conjugate binds to the MPT64 antigen in the sample, liquid
media. The complex then flows further and bind to the mouse monoclonal anti-
MPT64 on the solid phase in the test line, producing red to purple color band. In the
absence of MPT64, there is no line in the test band region.
Materials provided
SD BIOLINE TB Ag MPT64 test kit contains the following items to perform the assay.
1. Test device individually foil pouched with a desiccant
2. Extraction buffer (for sample preparation from solid cultures)
3. Instructions for use
Precautions / Kit storage and stability
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Warnings
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The SD BIOLINE TB MPT64 test should be stored at room temperature (1~30˚C).
The test device is sensitive to humidity and as well as to heat.
Perform the test immediately after removing the test device from a foil pouch.
Do not use it beyond the expiration.
Do not freeze. Do not store the test kit in direct sunlight
For in vitro diagnostic use only.
For rapid identification test of the M. tuberculosis complex from the liquid
cultures.
Do not eat or smoke while handling specimens.
Wear protective gloves and mask while handling specimens. Wash hands
thoroughly afterwards.
Clean up spills thoroughly using an appropriate disinfectant.
Decontaminate and dispose of all specimens, reaction kits and potentially
contaminated materials, as if they were infectious waste, in a biohazard
container.
Do not use the test kit if the pouch is damaged or the seal is broken.
Specimen preparation
Liquid cultures
• 100 of sample taken from liquid cultures processed by sputum specimen
can be applied directly to the sample well (S) without use of the sample
preparation procedure.
Solid cultures
• [Colony] For sample preparation from solid cultures, 3 ~ 4 colonies should
be suspended in 100 of extraction buffer prior to test.
• [Condensation fluid] If there is condensation fluid of slant agar tubes,
100 of sample taken from condensation fluid can be applied directly to
the sample well (S), or colonies can be suspended in this condensation fluid
instead of extraction buffer.
Interpretation of the test
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A color band will appear at left section of the result window to show that the
test is working properly. This band is the Control Band.
The right section of the result window indicates the test results. If another
color band appears at the right section of the result window, this band is the
Test Band.
Negative Result : The presence of only control band (“C” band) within the result
window indicates a negative result.
Positive Result : The presence of two color bands (“T” band and “C” band) within
the reult window, no matter which band appears first, indicates a positive result.
Note :
1. Depending on the MPT64 antigen concentration, the intensity on test line may
vary.
2. A positive result will not change once it has been established at 15 minutes.
Invalid Result : If the control band is not visible within the result window after
performing the test, the result is considered invalid. The directions may not have
been followed correctly or the test may have deteriorated. It is recommended that
the specimen should be re-tested.
Limitations of the test
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Although the SD BIOLINE TB Ag MPT64 test is very accurate in detecting
MPT64 antigen, a low incidence of false results can occur.
Other clinically available tests are required if questionable results are obtained.
As with all diagnostic tests, a definitive clinical diagnosis should not be based
on the results of a single test, but should only be made by the physician after
all clinical and laboratory findings have been evaluated.
Expected values
In the recent evaluation study of SD BIOLINE TB Ag MPT64 test kit in combination
with culture systems based on liquid media, strong positive bands against the
bacteria belonging to the Mycobacterium tuberculosis complex, M. tuberculosis, M.
africanum, and M. bovis were demonstrated, while no positive signal was observed
for the MOTT bacilli tested.
Bibliography of suggested reading
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Chiyoji ABE, Kazue HIRANO, and Tetsuo TOMIYAMA. Simple and
Rapid Identification of the Mycobacterium tuberculosis Complex by
Immunochromatographic Assay Using Anti-MPB64 Monoclonal Antibodies. J.
Clin. Microbiol. Vol. 37 (11), 3693-3697.
Kazue HIRANO, Akio AONO, Mitsuyoshi TAKAHASHI, and Chiyoji ABE.
Mutations Including IS6110 Insertion in the Gene Encoding the MPB64 Protein
of Capilia TB-Negative Mycobacterium tuberculosis Isolates. J. Clin. Microbiol.
Vol. 42 (1), 390-392.
Thomas OETTINGER and Ase B. ANDERSEN. Cloning and B-Cell-Epitope
Mapping of MPT64 from Mycobacterium tuberculosis H37Rv. Infect. Immun.
Vol. 62 (5), 2058-2064.
Disclaimer:
Whilst every precaution has been taken to ensure the diagnostic ability and accuracy of this
product, the product is used outside of the control of the Manufacturer and Distributor and
the result may accordingly be affected by environmental factors and / or user error. A person
who is the subject of the diagnosis should consult a doctor for further confirmation of the
result.
Warning:
The Manufacturers and Distributors of this product shall not be liable for any losses, liability,
claims, costs or damages whether direct or indirect or consequential arising out of or related
to an incorrect diagnosis, whether positive or negative, in the use of this product.
Manufactured by
Date Issued : May 2007
08FK50-02-0
Procedure of the test
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Remove the test device from the foil pouch, and place it on a flat, dry surface.
Add 100of liquid cultures (or 100of suspended solid cultures in buffer)
into the sample well.

SD BIOLINE TB Ag MPT64 Rapid Test Procedure
Solid cultures
[Colony]
1 2 3
4
100 of
extraction
buffer
5x
[Condensation fluid of slant agar tubes]
1 2
No Mycobacterium tuberculosis
antigen
100 of
condensation
fluid
Liquid cultures
1 2
100
Mycobacterium tuberculosis
complex positive
It is recommended that the
specimen should be re-tested
100 of
liquid
cultures
100