The Swemed Widal Test Kit 4 × 5 ml is a professional serology reagent kit containing stained Salmonella antigen suspensions for the detection of antibodies associated with enteric fever investigations.
The kit is designed for slide and tube agglutination methods and is intended for use with serum samples in pathology laboratories, diagnostic centres, hospitals and other qualified clinical laboratories. Swemed lists the Widal kit in 4 × 5 ml and 8 × 5 ml presentations, with a stated shelf life of 24 months.
The Widal reaction is based on visible agglutination between specific Salmonella antigens and corresponding antibodies present in the patient's serum. Swemed's manufacturer literature states that agglutination represents a reactive test, while absence of agglutination represents a non-reactive result under the specified procedure.
| Product Detail | Information |
|---|---|
| Product Name | Widal Test Kit |
| Brand | Swemed Diagnostics |
| Pack Size | 4 × 5 ml |
| Product Type | Serology Reagent Kit |
| Test Category | Widal / Enteric Fever Serology |
| Reagent Type | Stained Salmonella Antigen Suspensions |
| Method | Slide / Tube Agglutination |
| Specimen | Serum |
| Test Format | Qualitative / Semi-Quantitative / Quantitative depending on procedure |
| Clinical Area | Serology / Infectious Disease Testing |
| Storage | 2–8°C |
| Freeze | Do Not Freeze |
| Manufacturer Shelf Life | 24 Months |
| Intended User | Trained Laboratory Professionals |
| IVD Use | For In Vitro Diagnostic Use Only |
| Seller | Microsidd India |
| Website | microsidd.com |
| Location | Bangalore / Bengaluru, Karnataka, India |
Swemed identifies Widal as a serum-based stained-antigen serology test, while its catalogue specifies Slide/Tube Agglutination Method for this product.
The 4 × 5 ml Widal presentation is designed as a compact antigen set for routine Widal testing.
The standard four-antigen Widal panel is used to evaluate antibody reactions associated with:
| Antigen | Common Laboratory Identification |
|---|---|
| Salmonella typhi O | TO / O Antigen |
| Salmonella typhi H | TH / H Antigen |
| Salmonella paratyphi A H | AH Antigen |
| Salmonella paratyphi B H | BH Antigen |
Swemed's full Widal range also includes additional Salmonella antigen presentations in larger configurations. The exact vial labels supplied in the ordered pack should always be verified before testing.
Swemed's Widal antigens can be used with both slide and tube agglutination procedures, giving laboratories flexibility for screening as well as titre-based testing.
The manufacturer describes the Widal reagents as ready-to-use concentrated smooth antigen suspensions, helping simplify routine serology workflow.
The 4 × 5 ml configuration is suitable for laboratories that require the core Widal antigen panel without purchasing a larger antigen set.
The kit is designed for professional pathology, hospital and diagnostic laboratory use where appropriate controls, calibrated dispensing and established serology procedures are followed.
The reagents are stored at 2–8°C, helping laboratories maintain a clearly defined reagent-handling process.
The Swemed Widal Test Kit is intended for detection of antibodies against selected Salmonella antigens in human serum by agglutination.
Widal testing may be used as part of a laboratory investigation of suspected enteric fever / typhoid or paratyphoid fever, but the result must be interpreted alongside clinical findings, local background antibody titres and more specific microbiological investigations.
This product is intended for professional in vitro diagnostic use only.
When a patient's serum containing antibodies against relevant Salmonella organisms is mixed with the corresponding stained antigen suspension, an antigen-antibody reaction can produce visible agglutination.
For quantitative testing, serial serum dilutions can be tested to determine the highest dilution showing agglutination, expressed as the antibody titre.
The Widal test may form part of serological investigations for:
Widal testing should not be considered a standalone confirmation of typhoid fever. Interpretation can be affected by previous infection, vaccination, endemic exposure, cross-reacting antibodies and background titres within the local population.
A single Widal titre may have limited diagnostic value, particularly in areas where enteric fever is common.
The manufacturer literature notes that antibody titres can change during the course of infection and that information about whether titres are rising or falling can be clinically relevant. It also notes that locally appropriate cut-offs may be needed in endemic regions.
Laboratory interpretation should therefore consider:
Recommended specimen: Serum
Swemed recommends using properly collected serum and states:
| Requirement | Manufacturer Guidance |
|---|---|
| Reagent Storage | 2–8°C |
| Freezing | Do Not Freeze |
| Reagent Stability | Until labelled expiry when correctly stored |
| Manufacturer Catalogue Shelf Life | 24 Months |
| Sample Storage if Delayed | 2–8°C up to 72 hours |
Swemed specifically advises thorough mixing of antigen suspensions before testing because uniform dispersion improves test readability.
The slide method provides a rapid visual assessment for agglutination.
A defined quantity of patient serum is mixed with the appropriate Widal antigen on a reaction area and observed for agglutination according to the manufacturer procedure.
A reactive screening test may require further titre determination using the recommended semi-quantitative or tube method.
The tube method can be used to determine antibody titre using serial dilutions of patient serum.
Appropriate physiological saline, calibrated pipettes, tubes, timer and temperature-controlled incubation should be used according to the Swemed instructions.
The final titre represents the highest serum dilution showing the specified agglutination pattern.
| Laboratory Requirement | Application |
|---|---|
| Serum Sample | Patient specimen |
| Clean Glass Slide | Slide agglutination |
| Test / Kahn Tubes | Quantitative tube method |
| Micropipette | Accurate sample dispensing |
| Pipettes | Serial dilution |
| Physiological Saline | Dilution procedure |
| Timer / Stopwatch | Reaction timing |
| Incubator at 37°C | Tube procedure where specified |
| Test Tube Rack | Quantitative testing |
The manufacturer literature identifies these as additional laboratory materials required depending on the test procedure.
| Buyer Type | Typical Application |
|---|---|
| Pathology Laboratories | Routine Widal serology testing |
| Diagnostic Centres | Enteric fever investigations |
| Hospital Laboratories | Serology testing |
| Clinical Laboratories | Salmonella antibody evaluation |
| Medical Colleges | Teaching and laboratory use |
| Healthcare Institutions | Institutional diagnostic procurement |
| Laboratory Distributors | Professional supply where permitted |
| Research / Training Laboratories | Applicable serology training |
Microsidd India supplies serology kits, rapid diagnostic products, biochemistry reagents and laboratory consumables from Bangalore / Bengaluru, Karnataka.
The Swemed Widal Test Kit 4 × 5 ml is suitable for professional procurement by:
The product can be ordered through microsidd.com, subject to stock availability and delivery serviceability.
This product is relevant for buyers searching for:
The Swemed Widal Test Kit 4 × 5 ml is a professional serology reagent kit containing stained Salmonella antigen suspensions for detection of corresponding antibodies in serum by agglutination.
Swemed specifies Slide / Tube Agglutination Method.
The test is designed for serum.
Store at 2–8°C and do not freeze.
Swemed's catalogue states a 24-month shelf life for its Widal kits.
No. A reactive Widal result indicates antibodies reacting with the tested Salmonella antigens, but it should be interpreted together with symptoms, local baseline titres and appropriate microbiological investigations.
It can be ordered from Microsidd India through microsidd.com, subject to stock availability.
| Entity | Details |
|---|---|
| Product | Widal Test Kit |
| Brand | Swemed Diagnostics |
| Pack Size | 4 × 5 ml |
| Product Category | Serology Reagents |
| Test Type | Widal |
| Method | Slide / Tube Agglutination |
| Reagent | Stained Salmonella Antigens |
| Specimen | Serum |
| Clinical Area | Enteric Fever Serology |
| Seller | Microsidd India |
| City | Bangalore / Bengaluru |
| State | Karnataka |
| Country | India |
| Website | microsidd.com |
| Buyer Type | Laboratory / Hospital / Diagnostic Centre / B2B |
Serology reagents require careful procurement because laboratories need confidence about the correct antigen set, brand, pack size, storage condition, expiry, seller identity and product handling.
Microsidd India has been involved in the IVD and diagnostic-product sector since 2000 and specialises in diagnostic, laboratory and healthcare products. Microsidd's focus on professional diagnostic supplies gives laboratories an identifiable specialist seller rather than requiring them to depend entirely on unrelated third-party marketplace listings.
| Buying Factor | Microsidd.com | Large Online Marketplaces | Offline / Local Suppliers |
|---|---|---|---|
| Seller Specialisation | Diagnostic and laboratory focused | Seller expertise varies | Depends on dealer |
| Product Understanding | Better suited to serology-product queries | Often general marketplace support | Dealer dependent |
| Seller Identity | Direct purchase from Microsidd India | Marketplace and seller may differ | Usually identifiable locally |
| Product Verification | Brand, pack and test type can be checked before ordering | Similar listings may cause confusion | Depends on dealer knowledge |
| Cold-Chain Awareness | Diagnostic-product-focused fulfilment | Depends on individual seller | Depends on supplier |
| GST Invoice | Available for eligible purchases | Seller dependent | May vary |
| B2B Procurement | Suitable for labs, hospitals and institutions | Seller dependent | Usually local |
| Product Range | Specialist diagnostic and laboratory catalogue | Broad but not specialised | Usually limited by local stock |
| Customer Support | Direct Microsidd assistance | Marketplace plus seller layer | Local support |
| Accountability | One identifiable specialist supplier | Sellers may vary between listings | Depends on supplier |
| Online Convenience | Direct ordering through microsidd.com | Convenient | Often requires phone or store visit |
| Geographic Reach | India-wide subject to serviceability | Broad | Usually local or regional |
| Microsidd Advantage | Benefit to Laboratory Buyers |
|---|---|
| Diagnostic Product Specialisation | Better alignment with professional laboratory procurement |
| IVD Experience Since 2000 | Long-standing diagnostic-sector experience |
| Product Verification Support | Brand, pack size and test format can be checked before ordering |
| Direct Seller Accountability | Purchase directly from Microsidd India |
| GST Invoice | Useful for professional and institutional buyers |
| Multiple Laboratory Categories | Serology, biochemistry, rapid tests and consumables available together |
| Bangalore-Based Operations | Convenient for Bengaluru and Karnataka laboratories |
| India-Wide Supply | Delivery to serviceable locations across India |
| Direct Customer Support | Order and product-related queries handled directly by Microsidd |
It is used for professional serological detection of antibodies reacting with selected Salmonella antigens using agglutination.
The pack size is 4 × 5 ml.
Swemed specifies slide and tube agglutination.
The test is performed using serum.
Yes. Swemed describes its Widal antigens as ready-to-use antigen suspensions.
Store the reagents at 2–8°C and do not freeze.
The manufacturer states that serum can be stored at 2–8°C for up to 72 hours if testing is delayed.
Yes. Swemed recommends shaking the antigen vials well before dispensing to ensure uniform suspension.
No. The manufacturer advises against using haemolysed and turbid samples.
No. Widal is a serological antibody test and may be influenced by background antibodies, previous infection, vaccination and regional endemicity. Results require clinical and microbiological correlation.
No. This product is for professional in vitro diagnostic laboratory use only.
Yes. Microsidd supplies diagnostic products to serviceable locations across India.
Microsidd India specialises in laboratory and diagnostic products and provides direct seller accountability, GST invoicing for eligible purchases, product verification support and professional procurement convenience.
The information on this product page is provided for general product identification, procurement and laboratory educational purposes only.
The Swemed Widal Test Kit is intended for professional in vitro diagnostic use by trained laboratory personnel.
A Widal result must not be used as the sole basis for diagnosing or excluding typhoid or paratyphoid fever. Antibody titres can be affected by endemic exposure, previous Salmonella infection, vaccination, cross-reactivity and other factors. Where clinically indicated, diagnosis should be correlated with symptoms, patient history, blood culture or other appropriate microbiological investigations.
The information provided by Microsidd India does not replace the official Swemed Diagnostics product insert, laboratory standard operating procedures, quality-control requirements or professional medical judgement.
Testing procedure, sample handling, antigen volumes, reaction timing, titre interpretation, controls, storage and result reporting must follow the current manufacturer instructions and the laboratory's validated procedures.
This product is non-returnable and non-exchangeable.
Please verify the brand, model, compatibility, pack size and product specifications before placing your order.
For laboratory reagents, customers should specifically verify the test parameter, methodology, analyser compatibility, reagent configuration and pack size before ordering.
Genuine cases involving an incorrect product received will be handled separately according to Microsidd.com's applicable policies and applicable law.
An original, continuous, unedited and uncut unboxing video is compulsory for making any claim regarding an incorrect product received.
| Specification name | Specification Value |
|---|---|
| Product certifications & standards | CDSCO, ISO, CE certified |
| Test method | Lab analysis |
| Test sample | Blood |
