Peerless CRP Turbidimetric Reagent is a professional in-vitro diagnostic reagent for the quantitative determination of C-Reactive Protein (CRP) in serum using a latex turbidimetric method.
This listing is for the 1 × 50 mL pack.
The supplied method uses latex particles coated with anti-CRP antibodies. When these particles react with CRP present in the specimen, agglutination occurs. The degree of agglutination is proportional to the CRP concentration and is measured turbidimetrically.
Professional laboratory use only. This product should be used by trained laboratory personnel on compatible validated photometric / chemistry analyser systems according to the current Peerless IFU and laboratory SOP.
The reagent uses latex particles coated with anti-CRP antibodies.
When a serum sample containing C-Reactive Protein is mixed with the latex reagent, antigen-antibody agglutination occurs. The resulting increase in turbidity is proportional to the CRP concentration in the specimen and is measured photometrically.
| R1 – Diluent | Tris buffer, 20 mmol/L, pH 8.2 |
| R2 – Latex | Latex particles coated with goat anti-human CRP, pH 7.3 |
| CAL – Calibrator | Human serum; CRP concentration stated on the vial label and traceable to Certified Reference Material BCR 470 (IRMM) |
The IFU states that R1, R2 and calibrator are ready to use. R2 should be gently shaken / swirled before use.
Important: the supplied IFU contains an apparent inconsistency between its stated working-reagent mixing ratio and the numerical example. Laboratories should follow the current manufacturer application sheet / lot-specific IFU or confirm the preparation directly with Peerless before routine use rather than resolving this discrepancy by assumption.
Prewarm the working reagent and photometer / cuvette holder to 37°C.
| Instrument Zero | Distilled water |
| Wavelength | 540 nm |
| Sample / Calibrator | 10 µL |
| Working Reagent | 1.0 mL |
| First Reading | Immediately after sample addition – A1 |
| Second Reading | After 2 minutes – A2 |
The manufacturer IFU calculates CRP concentration using the change in absorbance of the sample relative to the calibrator:
CRP (mg/L) = [(A2 − A1) Sample ÷ (A2 − A1) Calibrator] × Calibrator Concentration
The calibrator concentration should be taken from the value stated on the supplied calibrator vial.
| Mode | Two Point Kinetic |
| Reaction | Increasing |
| Wavelength | 540 nm |
| Blank | Distilled Water |
| Sample Volume | 10 µL |
| Reagent Volume | 1.0 mL |
| Lag Time | 10 seconds |
| Measuring Time | 120 seconds |
| Linearity Limit | Up to 150 mg/L under the described assay conditions |
| Reporting Unit | mg/L |
Specimen: Fresh serum.
According to the IFU:
Store the reagents tightly closed at 2–8°C and prevent contamination during use.
According to the IFU:
| Linearity | Up to 150 mg/L under the described assay conditions |
| Above Linearity | IFU instructs samples above the range to be diluted 1/5 in 9 g/L NaCl and retested |
| Detection Limit | Values below 1 mg/L are stated to give non-reproducible results |
| Analytical Sensitivity | 2.9 mA / mg CRP/L |
| Prozone Effect | Up to 250 mg/L |
The IFU also reports that results did not show systematic differences when compared with commercial reagents of similar characteristics; detailed comparison data are available from the manufacturer on request.
Under the conditions stated in the Peerless IFU, the following concentrations are reported not to interfere:
Other substances may interfere. Laboratories should follow the complete current IFU and their internal interference-investigation policy when unexpected results occur.
Control sera should be used to monitor the performance of both manual and automated assay procedures.
The Peerless IFU recommends:
Plasma Protein Control N-I – Ref. 3915010
Plasma Protein Control N-II – Ref. 3915015
Each laboratory should establish its own quality-control scheme, acceptable limits and corrective actions when controls fall outside established tolerances.
The IFU lists the following adult reference value:
Adults: Up to 5 mg/L
Each laboratory should establish or verify its own reference interval appropriate to its population, analytical system and laboratory practice.
The Peerless IFU states that this method may be used with different instruments; however, every analyser application should be validated to demonstrate that the required analytical performance characteristics are achieved.
The IFU further notes that the linearity limit can depend on the sample-to-reagent ratio and analyser being used.
Before ordering, laboratories should therefore verify:
C-Reactive Protein is an acute-phase protein that may increase following tissue injury, infection, inflammation and other pathological processes.
CRP is a non-specific laboratory marker. A result should not be used alone to establish a diagnosis or determine the cause of inflammation.
The manufacturer specifically states that clinical diagnosis should not be made from a single test result but should be based on appropriate clinical and laboratory information.
Manufactured by: Asritha Diatech India Pvt. Ltd.
Marketed by: Peerless Biotech Pvt. Ltd.
This distinction is useful for laboratories verifying the exact reagent source, current IFU and technical support documentation.
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Microsidd India – Laboratory & Medical Supplies Bangalore
| Buying Consideration | Microsidd India | General Marketplace / Local Market |
|---|---|---|
| Exact Method Identification | CRP Latex Turbidimetry clearly identified | Method details may be omitted |
| Pack Size | 1 × 50 mL clearly stated | May vary between listings |
| Technical Information | IFU-based parameters presented for pre-purchase verification | Often limited to basic product title and price |
| Analyser Compatibility Warning | Buyers advised to verify analyser and method settings before ordering | Seller dependent |
| Professional Laboratory Focus | Diagnostic and laboratory-product focused supplier | May be a general marketplace seller |
| GST Invoice | Available for eligible orders | Seller dependent |
| Bengaluru Presence | RT Nagar, Bengaluru | Seller location varies |
| Institutional Procurement | Laboratory, clinic and hospital enquiries supported subject to availability | Seller dependent |
Microsidd India supplies professional diagnostic and laboratory products from RT Nagar, Bengaluru.
Laboratories searching for Peerless CRP Turbidimetric reagent Bangalore, CRP Latex Turbidimetry reagent Bengaluru, CRP 1×50 mL reagent near me, CRP reagent supplier RT Nagar, biochemistry reagent supplier Bangalore or professional laboratory reagents Karnataka can check availability through Microsidd.com.
Business Name: Microsidd India
Address: 09, 2nd Floor, 14th Cross, RT Nagar, Bengaluru – 560032, Karnataka, India
Phone / WhatsApp: +91 63667 72288
Email: support@microsidd.com
Website: https://microsidd.com
View Microsidd India on Google Maps
The pack size is 1 × 50 mL.
It uses latex turbidimetry.
The supplied IFU specifies serum.
The manufacturer method uses 540 nm. The IFU specifies a photometer / spectrophotometer thermostatable at 37°C with a 540 ±20 nm filter for the manual method.
The stated sample / calibrator volume is 10 µL.
The stated working reagent volume is 1.0 mL.
The system parameter is Two Point Kinetic with an increasing reaction.
The IFU specifies a 10-second lag time and a 120-second measuring time.
The stated linearity is up to 150 mg/L under the described assay conditions.
The manufacturer IFU instructs that higher-concentration specimens should be diluted 1/5 in 9 g/L NaCl and retested.
The IFU states that values below 1 mg/L give non-reproducible results.
The supplied analytical-performance section states a prozone effect up to 250 mg/L.
Store tightly closed at 2–8°C and prevent contamination.
The IFU states that the working reagent is stable for 20 days at 2–8°C.
The IFU states 7 days at 2–8°C or 3 months at −20°C.
The IFU lists up to 5 mg/L for adults while advising each laboratory to establish its own reference range.
The IFU states that the method may be used with different instruments, but every analyser application should be validated to demonstrate acceptable performance.
Yes. The supplied calibrator uses human serum, and its CRP concentration is stated on the vial. The value is traceable to Certified Reference Material BCR 470 (IRMM).
Yes. Control sera are recommended for both manual and automated procedures. Each laboratory should establish its own QC scheme and corrective actions.
No. CRP is a non-specific laboratory marker. Clinical diagnosis should not be based on a single CRP result.
This reagent is for professional in-vitro diagnostic laboratory use by trained personnel.
All analyser settings, reagent preparation, calibration, quality control, specimen handling, calculations and result interpretation must follow the current Peerless / manufacturer IFU and the laboratory's validated SOP.
The manufacturer specifically notes that applications to different instruments must be validated and periodically verified.
CRP is a non-specific acute-phase marker. A single CRP result should not be used independently to diagnose the underlying disease, infection or inflammatory condition.
The current IFU supplied with the actual product lot takes precedence over information displayed on an ecommerce page.
This professional laboratory reagent is non-returnable and non-exchangeable once correctly supplied.
Please verify before ordering:
Ordering an incompatible reagent, incorrect method or unsuitable pack configuration is not considered a product defect when the supplied product matches the confirmed order.
Laboratory reagents are storage-, contamination- and expiry-sensitive products and cannot normally be returned to saleable inventory after delivery.
Incorrect supply, verified transit damage or other valid claims will be handled according to the Microsidd Refund, Return, Replacement & Cancellation Policy and applicable law.
An original, continuous, unedited and uncut unboxing video is compulsory for claims involving incorrect, missing or damaged products.
Begin recording before opening the parcel. Open the carton by cutting the sealing tape carefully with a blade; do not tear the carton. Keep the courier label, sealed package, reagent packaging and product condition continuously visible.
Product: CRP – Turbidimetric
Method: Latex Turbidimetry
Pack: 1 × 50 mL
Marketed By: Peerless Biotech Pvt. Ltd.
Manufactured By: Asritha Diatech India Pvt. Ltd.
Analyte: C-Reactive Protein / CRP
Specimen: Serum
Mode: Two Point Kinetic
Reaction: Increasing
Wavelength: 540 nm
Sample Volume: 10 µL
Working Reagent: 1.0 mL
Lag Time: 10 seconds
Measuring Time: 120 seconds
Linearity: Up to 150 mg/L under stated conditions
Detection Limit: Values below 1 mg/L stated as non-reproducible
Prozone: Up to 250 mg/L
Reference Value: Adults up to 5 mg/L; laboratory-specific range recommended
Storage: 2–8°C
Professional Use: In-vitro diagnostic laboratory use
Supplier: Microsidd India, RT Nagar, Bengaluru
