Quality Assurance vs Quality Control: What's the Difference?

If you've ever searched for jobs in pharmaceuticals, biotechnology or manufacturing, you've probably come across the terms Quality Assurance (QA) and Quality Control (QC).

They sound pretty similar, and both play an important role in making sure products meet the right standards. But what do they actually involve, and how do you know which career path might be right for you?

Whether you're exploring your first role in the life sciences industry or thinking about moving into a different area of quality, we're here to break down the differences, with some real-world examples along the way. 🔬

TL;DR: What's the Difference Between Quality Assurance and Quality Control?

Quality Assurance (QA) focuses on the processes and systems that help prevent quality problems, while Quality Control (QC) focuses on testing and checking products to make sure they meet the required standards.

Put simply:

• Quality Assurance: Making sure the right procedures, systems and controls are in place to maintain quality.
• Quality Control: Testing, inspecting and analysing materials or products to check that they meet specifications.

Both are essential in industries such as pharmaceuticals, biotechnology and medical devices, where quality directly affects product safety and performance.

What Is Quality Assurance (QA)?

Quality Assurance is all about making sure things are done properly, consistently and in line with the required standards.

Rather than focusing primarily on testing the finished product, QA professionals work with the systems, processes and documentation that help businesses maintain quality throughout their operations.

For example, in pharmaceutical manufacturing, a QA professional might review production records, investigate deviations from approved procedures or make sure employees are following the correct processes.

The goal is to identify potential problems, reduce risks and help prevent the same issues from happening again.

According to the International Organization for Standardization (ISO), quality assurance is an important part of quality management, helping organisations consistently meet defined requirements.

What Does a Quality Assurance Professional Do?

Depending on the company and industry, a typical QA role might involve:

• Reviewing manufacturing documentation and batch records
• Supporting internal and external audits
• Managing deviations and corrective and preventive actions (CAPA)
• Reviewing standard operating procedures (SOPs)
• Supporting change control processes
• Ensuring compliance with Good Manufacturing Practice (GMP)
• Helping improve quality management systems (QMS)

If you enjoy problem-solving, working with different teams and understanding how processes fit together, QA could be a really interesting career path.

It's also an area where strong communication and attention to detail are just as important as technical knowledge.

Check out our current QA-related job opportunities now!

What Is Quality Control (QC)?

Quality Control is more focused on checking whether materials and products meet the required quality standards.

In many life sciences businesses, this involves laboratory testing, analysing samples and reviewing results to confirm that products meet their specifications.

For example, a QC analyst working for a pharmaceutical manufacturer might test a sample of a medicine to check its identity, purity or strength.

If the results fall outside the required limits, the issue needs to be investigated before an appropriate decision can be made about the material or product.

The American Society for Quality (ASQ) explains that quality control is concerned with fulfilling quality requirements, often through inspection, measurement and testing.

What Does a Quality Control Professional Do?

QC responsibilities vary depending on the products being manufactured, but common tasks include:

• Testing raw materials and finished products
• Carrying out chemical, physical or microbiological analysis
• Using laboratory equipment such as HPLC, GC or spectroscopy instruments
• Recording and reviewing analytical results
• Supporting investigations into out-of-specification (OOS) results
• Maintaining laboratory equipment and testing documentation
• Working in line with GMP and laboratory procedures

For someone who enjoys practical laboratory work, analytical science and working with scientific equipment, QC can be a great place to build a career.

It's also a common route into the pharmaceutical and biotechnology industries for graduates with backgrounds in chemistry, biology or related scientific subjects.

Quality Assurance vs Quality Control: Key Differences

Although QA and QC work closely together, their day-to-day responsibilities can be quite different.

Quality Assurance (QA)	Quality Control (QC)
Focuses on processes and systems	Focuses on materials, products and testing
Aims to prevent quality problems	Identifies products or results that don't meet requirements
Often involves audits, documentation and compliance	Often involves laboratory testing and analytical work
Supports quality management systems and improvements	Provides testing data to support quality decisions
Common roles include QA Officer, QA Specialist and QA Manager	Common roles include QC Analyst, QC Scientist and QC Manager

It's worth remembering that the two aren't completely separate. QA and QC teams often work together, particularly when investigating quality issues or improving manufacturing processes.

Quality Assurance vs Quality Control: A Real-World Pharmaceutical Example

Sometimes the easiest way to understand the difference is to see how QA and QC work together.

Imagine a pharmaceutical company manufacturing a new batch of tablets.

The Quality Assurance team helps ensure the manufacturing process is properly controlled. This could involve reviewing procedures, checking production documentation and making sure any deviations are investigated.

The Quality Control team tests samples of the tablets to check that they meet the required specifications. Depending on the product, this might include tests for identity, strength, purity or dissolution.

Both teams contribute to the overall quality assessment, but they're approaching it from different angles.

QC provides important evidence about the quality of the product, while QA helps ensure that the processes and systems used to manufacture it are appropriate and have been followed correctly.

In regulated pharmaceutical manufacturing, these activities sit within a wider quality framework. You can find out more through the UK Medicines and Healthcare products Regulatory Agency's guidance on Good Manufacturing Practice.

Is Quality Assurance or Quality Control a Better Career?

There's no right or wrong answer here. It really depends on your interests, strengths and what you'd like your working day to look like.

You Might Prefer Quality Assurance If...

You enjoy understanding how businesses operate, improving processes and making sure things are being done correctly.

QA roles often involve working with colleagues across manufacturing, regulatory affairs, technical operations and quality control.

You might spend your time reviewing documentation, investigating issues, preparing for audits or supporting improvements to a company's quality systems.

It's a good fit for people who are organised, detail-oriented and confident communicating with different teams.

You Might Prefer Quality Control If...

You enjoy practical science, laboratory work and analysing results.

QC roles can be particularly appealing if you've studied chemistry, biology, microbiology or another laboratory-based subject and want to put those skills to use.

You could find yourself working with analytical instruments, carrying out testing, investigating unexpected results and helping ensure products meet their specifications.

For many science graduates, QC offers an opportunity to develop valuable technical experience in a regulated industry.

And remember, choosing one doesn't necessarily mean staying there forever. Professionals can move between QC, QA and other quality-related disciplines as their experience develops, although some transitions may require additional training or regulatory knowledge.

What Qualifications Do You Need for QA and QC Jobs?

The qualifications you'll need depend on the employer, industry and level of responsibility.

For entry-level QC laboratory positions, employers often look for candidates with a degree or relevant qualification in chemistry, biology, microbiology, pharmaceutical science or a related subject.

QA roles can be more varied. Some employers look for candidates with scientific qualifications, while others place particular value on experience in regulated manufacturing, documentation, compliance or quality systems.

Across both disciplines, knowledge of GMP can be particularly valuable when applying for pharmaceutical and biotechnology roles.

If you're starting your career, it's worth looking at positions such as:

• Graduate QC Analyst
• QC Laboratory Technician
• Junior QA Officer
• Quality Administrator
• QA Associate
• Quality Systems Assistant

And if you're unsure where to begin, take a look at our guide to finding jobs for science graduates.

Looking for Your Next QA or QC Job?

Whether you're just starting out or you've already built up experience in quality, there are plenty of different directions your career could take.

At Hyper Recruitment Solutions (HRS), we work with employers across the life sciences industry, helping professionals find opportunities in Quality Assurance, Quality Control, manufacturing, regulatory affairs and more.

If you're thinking about your next move, we'd love to help you explore what's out there.

Ready to see what's available? Browse our latest science and life sciences jobs or get in touch with the HRS team to find out how we can help.

Frequently Asked Questions

Is QA the Same as QC?

No. Quality Assurance and Quality Control are closely related, but they have different responsibilities. QA focuses on the processes and systems used to maintain quality, while QC focuses on checking materials and products against defined requirements.

Is Quality Assurance Better Than Quality Control?

Neither is inherently better. QA may appeal more to people interested in compliance, systems and process improvement, while QC is often a better fit for those who enjoy laboratory testing and analytical work.

Can You Move From QC Into QA?

Yes. Moving from QC into QA is a possible career progression route, particularly in pharmaceutical and biotechnology businesses. Experience with GMP, investigations, documentation and quality systems can help support the transition.

Do You Need a Degree to Work in Quality Assurance?

Not always. Some QA roles require a relevant scientific degree, while others accept candidates with suitable experience in manufacturing, quality administration or regulated environments. Requirements vary between employers.

What Is GMP in Quality Assurance and Quality Control?

GMP stands for Good Manufacturing Practice. It refers to the standards and controls used to ensure medicines are consistently produced and controlled to appropriate quality requirements. Both QA and QC professionals play important roles in supporting GMP compliance.

Are QA and QC Jobs in Demand in the UK?

QA and QC skills are relevant across UK pharmaceuticals, biotechnology, medical devices and manufacturing. Recruitment demand varies by specialism, location and market conditions, but both disciplines offer established career paths within regulated industries.