The Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml is a professional clinical biochemistry reagent intended for the quantitative colorimetric determination of potassium in serum and plasma.
Swemed describes the assay as a Turbidity Method using sodium tetraphenylboron. Potassium reacts with sodium tetraphenylboron to produce a colloidal suspension, and the degree of turbidity formed is proportional to the potassium concentration in the sample.
Swemed’s current catalogue lists Potassium in a 2 × 25 ml pack, product code POT 727, using the Tetraphenyl Boron Method.
The reagent is suitable for professional pathology laboratories, diagnostic centres, hospitals and clinical chemistry laboratories, including compatible open-system fully automatic and semi-automatic analysers after application programming and method validation.
| Product Detail | Information |
|---|---|
| Product Name | Potassium Electrolyte Reagent Kit |
| Brand | Swemed Diagnostics |
| Pack Size | 2 × 25 ml |
| Product Code | POT 727 |
| Test Parameter | Potassium |
| Method | Tetraphenyl Boron / Turbidity Method |
| Assay Mode | Endpoint |
| Wavelength | 630 nm |
| Temperature | 37°C |
| Unit | mEq/L |
| Standard Concentration | 4 mEq/L |
| Reaction Direction | Increasing |
| Reagent Volume | 1000 µl |
| Sample Volume | 20 µl |
| Incubation | 10 minutes at room temperature |
| Measuring Range | 1–8 mEq/L |
| Linearity | Up to 8.0 mEq/L |
| Specimen | Serum / Heparin Plasma |
| Reagent Preparation | Ready to Use |
| Reagent Storage | 18–30°C |
| Freezing | Do Not Freeze |
| Analyser Compatibility | Open-System Fully Automatic & Semi-Automatic Biochemistry Analysers |
| Intended Use | Professional In Vitro Diagnostic Use |
| Seller | Microsidd India |
| Website | microsidd.com |
| Location | Bangalore / Bengaluru, Karnataka, India |
The assay settings above are taken from the current Swemed Potassium technical insert.
Potassium is the principal cation of intracellular fluid and plays an important role in:
Swemed notes that elevated potassium levels may be associated with conditions such as renal failure, dehydration, shock or adrenal insufficiency, while decreased potassium levels may occur with malnutrition, gastrointestinal fluid loss and increased adrenal cortical activity.
Potassium is commonly tested alongside:
The Swemed Potassium assay uses sodium tetraphenylboron in a specially prepared reagent mixture.
Potassium in the specimen reacts to form a colloidal suspension.
The turbidity produced is proportional to the potassium concentration within the assay measuring range of approximately 1–8 mEq/L.
Swemed states that:
The potassium reagent and potassium standard are ready to use.
This helps simplify routine laboratory workflow by avoiding additional reagent reconstitution.
| Parameter | Swemed Specification |
|---|---|
| Test | Potassium |
| Method | Tetraphenyl Boron / Turbidity |
| Mode | Endpoint |
| Wavelength | 630 nm |
| Unit | mEq/L |
| Temperature | 37°C |
| Standard Concentration | 4 mEq/L |
| Reaction Slope | Increasing |
| Reagent Volume | 1000 µl |
| Sample Volume | 20 µl |
| Incubation | 10 minutes at room temperature |
| Blanking | Reagent Blank |
| Measuring Range | 1–8 mEq/L |
| Linearity | 8.0 mEq/L |
| Tube | Reagent | Standard / Sample |
|---|---|---|
| Blank | 1000 µl | — |
| Standard | 1000 µl | 20 µl Standard |
| Test | 1000 µl | 20 µl Sample |
Mix and incubate for:
10 minutes at room temperature
Then read the absorbance of the standard and sample against the reagent blank at:
630 nm.
Potassium (mEq/L) = Absorbance of Sample ÷ Absorbance of Standard × Concentration of Standard
Manufacturer standard concentration:
4 mEq/L.
The Swemed Potassium Reagent Kit can be used with compatible programmable open-system analysers where the required endpoint parameters can be entered and validated.
| Open-System Setting | Potassium Application |
|---|---|
| Mode | Endpoint |
| Wavelength | 630 nm |
| Temperature | 37°C |
| Reagent Volume | 1000 µl |
| Sample Volume | 20 µl |
| Standard | 4 mEq/L |
| Incubation | 10 minutes at RT |
| Reaction | Increasing |
| Blank | Reagent Blank |
| Unit | mEq/L |
Suitable analyser categories include:
The laboratory must verify instrument compatibility and validate the reagent application before routine clinical reporting.
Swemed lists:
Fresh, clear and non-haemolysed serum from fasting patients is recommended.
This is especially important for potassium because red blood cells contain a high concentration of intracellular potassium. Haemolysis can release potassium into the specimen and produce falsely elevated results.
Blood should also be separated from red cells shortly after collection to minimise leakage of intracellular potassium into serum or plasma.
Swemed states that plasma collected with an anticoagulant that does not contain potassium may be suitable.
For best results:
Swemed provides the following serum/plasma stability guidance:
| Storage Condition | Stability |
|---|---|
| 15–25°C | 7 days |
| 2–8°C | Up to 2 weeks |
Contaminated specimens should be discarded.
The assay measuring range is:
1–8 mEq/L
The stated linearity is:
8.0 mEq/L.
For samples above this measuring range, the manufacturer advises dilution 1:1 with 0.9% NaCl, repeating the assay, and multiplying the result by 2.
Swemed notes that the following may interfere with the assay:
Because haemolysis itself releases intracellular potassium, visibly haemolysed samples should be avoided.
| Specimen | Manufacturer Reference Range |
|---|---|
| Serum / Plasma | 3.4–5.3 mEq/L |
Swemed recommends that each laboratory verify whether this reference interval is appropriate for its own patient population and analyser system.
Swemed states that the reagent should be:
The reagent should also be checked for deterioration before use. Swemed lists inappropriate blank absorbance, visible particles and abnormal turbidity as signs that reagent performance should be reviewed.
The manufacturer notes that the reagent contains sodium azide at 0.95 g/L as preservative.
Professional users should:
| Parameter | Laboratory Relevance |
|---|---|
| Potassium | Intracellular and cardiac electrolyte balance |
| Sodium | Extracellular fluid and osmotic balance |
| Chloride | Fluid and acid-base balance |
| Calcium | Mineral and neuromuscular function |
| Magnesium | Neuromuscular and metabolic function |
| Urea | Renal and protein metabolism |
| Creatinine | Renal filtration assessment |
| Feature | Swemed Sodium | Swemed Potassium |
|---|---|---|
| Pack Size | 2 × 25 ml | 2 × 25 ml |
| Method | Colorimetric | Tetraphenyl Boron / Turbidity |
| Wavelength | 630 nm | 630 nm |
| Mode | Endpoint | Endpoint |
| Sample Volume | 10 µl | 20 µl |
| Standard | 150 mEq/L | 4 mEq/L |
| Linearity | 200 mEq/L | 8 mEq/L |
| Specimen | Serum / Heparin Plasma | Serum / Heparin Plasma |
The two products are separate electrolyte assays and should not be interchanged.
| Buyer Type | Typical Application |
|---|---|
| Pathology Laboratories | Routine potassium testing |
| Diagnostic Centres | Electrolyte and renal-profile testing |
| Hospital Laboratories | Clinical chemistry investigations |
| Nephrology Centres | Electrolyte monitoring |
| Dialysis Centres | Renal and electrolyte testing |
| Cardiac Care Laboratories | Potassium monitoring |
| Clinical Chemistry Laboratories | Routine potassium estimation |
| Medical Institutions | Teaching and diagnostic use |
| Healthcare Organisations | Institutional procurement |
| Laboratory Distributors | Professional supply where permitted |
Microsidd India supplies electrolyte reagents, renal-profile reagents and clinical biochemistry products from Bangalore / Bengaluru, Karnataka.
The Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml is suitable for pathology laboratories, diagnostic centres, hospitals, nephrology centres, dialysis facilities and professional clinical chemistry laboratories using compatible open-system analysers.
The product can be ordered through microsidd.com, subject to stock availability and delivery serviceability.
Relevant searches include:
The Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml is a ready-to-use professional clinical chemistry reagent used for quantitative potassium determination by a Tetraphenyl Boron / Turbidity endpoint method.
It uses sodium tetraphenylboron to create a turbidity proportional to potassium concentration.
630 nm.
20 µl.
1000 µl.
4 mEq/L.
Up to 8.0 mEq/L.
Serum and heparin plasma.
Red blood cells contain high intracellular potassium, so haemolysis can release potassium into the sample and cause falsely elevated results.
Yes, when used on compatible open-system semi-automatic biochemistry analysers after programming and laboratory validation.
Yes, when used on compatible open-system fully automatic analysers that permit third-party reagent programming and support 630 nm endpoint measurement.
| Entity | Details |
|---|---|
| Product | Potassium Electrolyte Reagent Kit |
| Brand | Swemed Diagnostics |
| Pack Size | 2 × 25 ml |
| Product Code | POT 727 |
| Analyte | Potassium |
| Method | Tetraphenyl Boron / Turbidity |
| Mode | Endpoint |
| Wavelength | 630 nm |
| Unit | mEq/L |
| Specimen | Serum / Heparin Plasma |
| Clinical Category | Electrolytes / Renal Profile |
| Product Category | Laboratory Reagents |
| Subcategory | Biochemistry Reagents |
| Analyser Compatibility | Open-System Fully Automatic & Semi-Automatic Analysers |
| Seller | Microsidd India |
| City | Bangalore / Bengaluru |
| State | Karnataka |
| Country | India |
| Website | microsidd.com |
Electrolyte reagents should be purchased only after verifying the exact analyte, methodology, wavelength, pack size, sample requirement, analyser compatibility, storage condition and seller source.
Microsidd India specialises in laboratory and diagnostic products and has long-standing experience in the IVD sector, helping professional laboratory buyers verify technical requirements before purchase.
| Buying Factor | Microsidd.com | Large Online Marketplaces | Offline / Local Suppliers |
|---|---|---|---|
| Seller Specialisation | Diagnostic & laboratory focused | Seller expertise varies | Dealer dependent |
| Method Verification | Tetraphenyl Boron / Turbidity method can be confirmed | Listing details may be limited | Depends on dealer |
| Pack Verification | 2 × 25 ml can be confirmed | Pack listing may vary | Stock dependent |
| Open-System Guidance | Better suited to analyser-specific queries | Often limited | Dealer dependent |
| Product Support | Reagent parameters can be checked before ordering | General marketplace support | Depends on supplier |
| GST Invoice | Available for eligible purchases | Seller dependent | May vary |
| B2B Procurement | Suitable for labs and institutions | Seller dependent | Usually local |
| Product Range | Specialist electrolyte and biochemistry catalogue | Broad but not specialised | Often limited |
| Customer Support | Direct Microsidd support | Marketplace + seller layer | Local support |
| India-Wide Supply | Subject to serviceability | Broad | Usually regional |
It is used for quantitative determination of potassium in serum and plasma using a tetraphenyl boron turbidity method.
2 × 25 ml.
Tetraphenyl Boron / Turbidity Method.
630 nm.
Endpoint.
20 µl.
1000 µl.
4 mEq/L.
1–8 mEq/L.
8.0 mEq/L.
Yes. Swemed states that the reagent and standard are ready to use.
Haemolysis releases intracellular potassium from red blood cells and may cause falsely high potassium values.
Store at 18–30°C, protect from light and contamination, and do not freeze.
Yes, on compatible open-system semi-automatic biochemistry analysers after programming and method validation.
Yes, on compatible open-system fully automatic analysers supporting the required endpoint parameters.
No. It is intended for professional in vitro diagnostic use only.
The information on this product page is provided for general product identification, procurement and laboratory educational purposes only.
This product is intended for professional in vitro diagnostic use by trained laboratory personnel.
Potassium results should not be interpreted independently to diagnose or exclude renal, cardiac, adrenal, electrolyte or metabolic disorders. Interpretation should consider patient history, clinical findings, sodium, chloride, renal-function parameters, ECG findings where appropriate and other relevant investigations.
Because haemolysis can significantly elevate measured potassium, specimen quality is especially important for this test.
For open-system fully automatic and semi-automatic analysers, instrument compatibility, application settings, calibration, quality control and analytical performance must be verified and validated by the laboratory before routine patient reporting.
The current Swemed package insert supplied with the actual product lot should always be treated as the definitive technical specification.
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 |
|---|---|
| Chemical grade | Reagent, Laboratory |
| Test method | Lab analysis |
| Test sample | Blood |
