Raw material inspection is essential for engineers and other industrial professionals because it verifies a material’s properties, such as potency, shelf life, and chemical composition.
These checks safeguard brands’ reputations by protecting user safety and overall quality. Many service providers have locations globally, but what are the top-rated material inspection companies in the U.S.?
1. McCreath Laboratories

McCreath Laboratories is a leading expert in raw material inspection, offering more than 140 years of independent laboratory testing experience. Founder Andrew S. McCreath was one of the first chemists employed by a United States steel manufacturer.
In addition to testing materials, this option provides dependable consulting services for clients, giving people the advantage of dedicated experts who handle every step of the process for them. Parties can depend on this knowledge to create testing regimens for their raw materials.
The results of material tests can ensure clients operate according to industry standards, prevent expensive processing mistakes, improve process efficiency and support product improvements that increase competitiveness.
Whereas some entities only handle analysis, McCreath stays involved in the inspection, sampling and analysis processes, providing superior oversight and quality control.
Key Features
Customers can start the materials-testing process by completing sample submission forms online or having one of McCreath’s experts collect samples from their locations. | The business has six locations across the United States, making it accessible and convenient for clients who need testing in short time frames. |
It combines expert analysis and testing equipment access to deliver trustworthy results. | McCreath is a smaller company than some others in this industry, allowing its employees to provide more personal service while simultaneously retaining connections to parties who understand raw testing. |
2. Q Laboratories

Located in Ohio, Q Laboratories offers analytical and microbiological services within its testing range, allowing it to provide holistic support to its clients using multiple compendial methods such as USP/NF, ISO, AOAC and EP ASTM.
This testing provider is FDA registered, ISO accredited and cGMP/GLP compliant. Additionally, it can design environmental monitoring programs for clients who want to ensure their facilities are free from microbial contamination and common allergens.
Employees give consultative, collaborative, relationship-oriented service, demonstrating that they work with clients rather than just for them, driving satisfying, reliable results.
The testing professionals can often suggest various testing methods for customized support, whether the goal is cost-effectiveness, quick service or something else. It also prides itself on responsiveness and availability.
Key Features
The company upholds turnaround times with rush service available. | Q Laboratories has served the over-the-counter, cosmetics, personal care, pharmaceutical and specialty chemicals industries for more than five decades. |
It has tested hundreds of raw materials, making it a highly experienced choice for clients with varying needs. | Clients can expect best-in-industry customer service and support to accompany the thorough testing procedures. |
3. SK pharmteco

With three locations in the United States and four global facilities, SK pharmteco has a broad reach, making it well-equipped to meet clients’ raw material inspection needs. This option specializes in assisting clients working on drug development projects.
In addition to running inspections on raw materials, it can support customers with technology-transfer needs, such as before the parties open new manufacturing materials. That expertise can keep quality control high while preventing unwanted complications.
Staff have extensive experience examining solvents, buffers, cell culture media and more, allowing them to confirm identity, purity and potency. The provider also offers specialty services to customers in specific industries.
For example, extractables and leachables testing can identify manufacturing quality gaps. Analyses occur in CGMP and FDA-compliant laboratories, allowing those involved to maintain tight quality standards.
Key Features
A proven track record in operating according to specific regulations increases the likelihood of successful engagements with external authorities. | Representatives collaborate with clients throughout their interactions, upholding this enterprise’s commitment to operate from a foundation of trust and common purpose. |
Workers combine scientific expertise with clear communication, helping clients realize they have chosen a reputable testing provider. | SK pharmteco team members have expertise in multiple modalities, allowing customers to deal with a single entity to meet all their raw inspection needs. |
4. Quality Liaison Services

Based in Tennessee, Quality Liaison Services has assisted suppliers and original equipment manufacturers with meeting their inspection needs for two decades.
It is an ISO 9001-certified service provider that conducts on-site testing to verify raw materials meet the required standards, specifications and requirements. Trust is foundational in this provider’s actions, enabling it to build and maintain mutually beneficial partnerships.
Quality Liason Services works directly with clients throughout North America as an extension of its operations. The business maintains hubs in the United States, Canada and Mexico to expand its reach.
It also follows an established quality policy, ensuring consistency in every interaction, regardless of the industry or raw material tested. Clients can expect excellent responsiveness and detail-oriented approaches that strengthen their enterprises and improve accuracy.
Key Features
The company’s inspectors can visit the sites of clients or their suppliers to collect samples and keep parties updated with a cloud-based tracking system. | Inspectors and sample collectors use wearable technology to show clients what they see in the field, resulting in maximum transparency and visibility. |
Quality Liason Services offers containment strategies for clients if raw material samples do not pass inspections. | In addition to its one-off quality assurance services, this business provides representation services, where team members integrate into daily operations for a predetermined time. |
5. Consumer Product Testing Company

Consumer Product Testing Company is a New Jersey-based brand with over five decades of experience meeting customers’ raw material inspection needs. Tests occur across GLP and GMP-compliant facilities, reassuring clients of consistently high-quality results.
Internal processes maintain strict oversight to verify all inspections happen according to compendial, client-specified or in-house methodologies.
Customers benefit from extensive expertise and up-to-date technologies, helping them adhere to regulatory and compliance standards.
The business uses numerous testing instruments and mechanisms — such as ultraviolet/visible spectrophotometers and gas chromatographs — to meet people’s requirements.
This family-owned enterprise also has a history of continuous innovation since its leaders recognized it was necessary for remaining dynamic in a rapidly changing industry serving parties with diverse requirements.
The inspectors pride themselves on comprehensive approaches that generate trustworthy results, which enable clients’ growth while solidifying their reputations.
Key Features
Flexible turnaround times support clients in addressing their needs within tight time frames. | This company is ISO/IEC 17025:2017 accredited, demonstrating its attention to establishing effective methods for internal quality control. |
Customized testing programs allow parties to request desired activities and methods for personalized, application-specific service. | Inspectors test raw materials of all types, from active ingredients in drugs and dietary supplements to processing aids. |
6. OneMonroe

Headquartered in Michigan, OneMonroe has extensive quality control and manufacturing assistance and provides cost-effective, comprehensive solutions to clients across industries.
Although its roots are in 1920s-era manufacturing, its services now impact numerous other areas, including quality control and supply chain management. Employees understand the complexities of sourcing and testing raw materials and apply their expertise to address common pain points.
In addition to performing raw materials inspections, these technicians can provide detailed qualification processes for partner factories, ensuring attentiveness throughout all supply chain phases.
OneMonroe assists clients through customized services that help them maintain a competitive edge and achieve efficient deliveries. It also regularly expands its facilities and access to equipment, keeping it relevant and responsive.
Key Features
OneMonroe employees perform a detailed receiving inspection process to ensure all incoming materials align with clients’ stated quality guidelines. | It has received ISO 9001:2015 certification, highlighting how employees collaborate to maintain an effective quality control process that extends to raw material inspection and numerous other areas. |
Since the company maintains services across the United States and in numerous global locations, it is well-equipped to handle clients’ needs regardless of operating location. | Representatives embody a problem-solving approach while taking the time to understand clients’ business models, challenges and needs. |
7. Laboratory Testing

Laboratory Testing is an independent testing facility and calibration company in Pennsylvania. Since 1984, it has served customers worldwide who have recognized that this provider is an excellent choice for efficiently delivered, reliable results.
Although it began as a metal and alloy testing lab, it has expanded significantly and now handles materials ranging from raw metals to ceramics.
This enterprise serves many customers in mission-critical or highly regulated industries. Tightly maintained internal lab systems influence all testing and inspection measures to optimize outcomes and reduce errors.
Regular audits ensure it meets or exceeds demanding expectations. Since parties receive detailed test results and calibration certificates as required, they can treat Laboratory Testing as an essential partner in quality control efforts.
Key Features
Inspectors adhere to test specifications such as ASTM, AWS, ISO, EN, DIN, JIS, and NACE, giving customers the consistency required to succeed. | Technicians maintain a 99.5% accuracy rate on standard delivery and rush orders, establishing customer trust and repeat business. |
Customers with urgent project timelines can request rush services to meet them through same-day, next-day and expedited offerings. | Inspectors use well-established and standardized testing procedures to give clients efficient results and dependable outcomes. |
8. Pace Life Sciences

While maintaining United States testing facilities in Minnesota, New York and Puerto Rico, Pace Life Sciences assists pharmaceutical clients who need raw material inspections within their drug development processes.
Lab technicians run tests on excipients and active ingredients to check their quality, purity, and identity to spot potential problems early and prevent costly complications such as product recalls or market introduction delays.
All labs are cGMP compliant and ISO/IEC 17025 accredited, highlighting a commitment to quality control and meeting customer expectations. Additionally, inspectors can work with clients to develop and validate customized procedures.
This is a particularly valuable offering when compendial methods do not apply to novel materials. Similarly, when parties have previously established testing techniques, the Pace Life Sciences team can transfer them into their facilities.
Key Features
The company’s online data management system lets clients access information and documents at any time to maximize visibility. | Inspectors can give late-phase and post-approval change support, ensuring customers can adapt to regulatory decisions and operate without setbacks. |
Since this business has multiple well-equipped testing facilities, it supports modern, in-demand organizations’ scalability and time-sensitivity needs. | Highly experienced testing professionals examine raw materials according to numerous industry standards and compendia. |
9. Nelson Labs

Nelson Labs is a Utah-headquartered brand with additional testing labs in Illinois and Belgium.
Since this provider offers more than 900 microbiological and analytical laboratory tests across industries and provides clients with expert advisory services, it has developed a strong reputation among parties who need reliable assistance to meet their production and quality control requirements.
As a top worldwide provider of mission-critical sterilization, lab testing and advisory services for the health care industry, Nelson Labs affects the lives of more than 190 million individuals worldwide each year.
More than 700 scientists and staff members work in innovative facilities while looking beyond clients’ test results to determine the most effective ways to reach long-term business goals through value-added and actionable suggestions.
Key Features
Potential customers can create custom quotes online, making it easy to determine if Nelson Labs’s services fit into their budgets. | A convenient portal allows people to submit raw material samples or pay bills online, helping them handle necessities efficiently and on their desired schedules. |
The available raw materials inspections assist pharmaceutical manufacturers, medical device makers and others in high-tech industries. | Experts can provide personalized consultations after hearing about customers’ specific products and needs and exploring the options. |
Methodology
The top-rated raw material inspection companies in the U.S. appeared on this list following assessments to determine their suitability in meeting clients’ diverse needs.
Feedback provided in reviews submitted through Google and Trustpilot, as well as company testimonials, shaped whether entities were part of this assortment, along with testimonials and related aspects that indicate reputation, including the number of years since their establishment and how well they meet the needs of clients.
Selecting the Top-Rated Raw Material Inspection Companies in the U.S.
Decision-makers in the United States who need raw material inspection services should use this list to narrow their options.
Having detailed discussions about an organization’s budget, required tests, and the necessary turnaround time will set expectations and help potential clients learn what is possible.