BLS certification is a credential showing you know how to perform CPR and use an automated external defibrillator (AED) in an emergency

BLS stands for Basic Life Support. The certification comes from the American Heart Association (AHA) and shows that you have completed a course covering CPR techniques, rescue breathing, and AED operation. Healthcare employers—hospitals, clinics, ambulance services, dental offices—often require or strongly prefer this credential for patient-facing roles because these skills can save a life in the minutes before professional emergency responders arrive.

The certification is not a license to practice medicine or a substitute for professional medical training. It is a standalone credential that demonstrates competency in one specific set of emergency skills. Most BLS certifications last for two years, after which you must take a renewal course to keep the credential current.

Key Takeaways

  • BLS certification shows you can perform CPR, rescue breathing, and operate an AED—skills that may be required for healthcare jobs.
  • The American Heart Association issues the certification after you complete a course and pass a written test and skills demonstration.
  • The credential is valid for two years and then requires renewal through a refresher course.
  • Many hospitals, clinics, and emergency services will not hire you for certain roles without current BLS certification.
  • You can take a BLS course at hospitals, community colleges, the Red Cross, or private training centers in your area.

What the BLS course covers

A standard BLS course runs four to eight hours and covers adult CPR, child CPR, infant CPR, and AED use. You will learn the correct hand placement and compression depth for chest compressions, the timing of rescue breaths, how to recognize when someone is in cardiac arrest, and how to operate an AED device. The course also covers how to work as part of a team during a medical emergency and when to call 911.

Most courses include both classroom instruction and hands-on practice with mannequins. You will perform CPR on a practice dummy under supervision so the instructor can correct your technique. At the end, you take a written exam (usually 25 to 50 multiple-choice questions) and demonstrate CPR and AED skills on the mannequin. You must pass both parts to earn the card.

Who needs BLS certification

Healthcare employers often require BLS certification for nurses, paramedics, emergency medical technicians (EMTs), respiratory therapists, and other roles where you work directly with patients. Some dental offices, physical therapy clinics, and urgent care centers also require it. If you are explore for a job in healthcare and the posting mentions BLS, you will need the certification before you start—most employers will not hire you without it.

Even if your job does not require it, some people take BLS certification for personal safety reasons. Parents, teachers, lifeguards, and fitness instructors sometimes pursue it voluntarily. The course is open to anyone; there are no prerequisites.

How to find a BLS course near you

The American Heart Association maintains a directory of authorized training centers on its website (heart.org). You can search by zip code to find courses in your area. Community colleges, hospitals, and fire departments often offer BLS courses at lower cost than private training centers. The Red Cross also offers BLS-equivalent training called CPR/AED certification, which many employers accept as equivalent to AHA BLS.

Course costs vary widely—from $40 to $150 depending on the provider and location. Some employers cover the cost if you are already hired; others expect you to pay before you start. Check the job posting or call the employer to ask whether they will reimburse the course fee or if you need to pay out of pocket.

How long BLS certification lasts and renewal

Your BLS card is valid for two years from the date you pass the course. After two years, you must take a renewal course to keep the credential current. A renewal course is shorter than the initial course—usually two to four hours—because you already know the material and only need to refresh your skills and update your knowledge on any changes to CPR guidelines.

If your certification expires, you cannot straightforward take a renewal course; you must retake the full initial course. Some employers will let you work while your certification is expired if you have already scheduled a renewal course, but this varies. It is best to renew before the expiration date on your card to avoid any gaps.

BLS certification versus other CPR credentials

The American Heart Association offers several levels of CPR training. Heartsaver CPR is a shorter course (about three hours) that teaches CPR and AED but is less detailed than BLS. Heartsaver is often used for non-healthcare workers like office staff or teachers. ACLS (Advanced Cardiac Life Support) is a more advanced credential for healthcare professionals who work in hospitals or emergency settings; it requires BLS certification first.

The Red Cross offers CPR/AED certification, which covers the same skills as BLS and is accepted by most employers as equivalent. If a job posting says "BLS or equivalent," the Red Cross credential usually counts. Always check with the employer or training center to confirm which certifications they accept.

What happens if you let your certification expire

If your BLS card expires and you are working in a healthcare role that requires it, you are no longer in compliance with your employer's requirements. Some employers will suspend you from patient-facing duties until you renew. Others may terminate your employment if you do not renew within a grace period (often 30 days). The consequences depend on your employer's policy.

If you are job hunting and your BLS has expired, you will not be able to explore for positions that require current certification. You will need to complete the full initial course again, not just a renewal, because the credential is no longer valid. Plan ahead and renew before your card expires to avoid losing work opportunities or facing discipline at your current job.

Frequently Asked Questions

Do I need BLS certification to work in healthcare?

It depends on the role and employer. Nurses, paramedics, and emergency room staff almost always need it. Administrative staff, billing clerks, and housekeeping may not. Check the job posting or call the employer to ask whether BLS is required for the specific position you are interested in.

Can I take a BLS course online?

The American Heart Association offers online theory portions of some BLS courses, but you must complete the hands-on skills portion and exam in person with an instructor. You cannot earn a full BLS card through online-only training. Some providers offer blended courses where you watch videos at home and then attend a shorter in-person session.

How much does a BLS course cost?

Costs range from $40 to $150 depending on the provider and your location. Hospitals and community colleges often charge less than private training centers. Some employers cover the cost if you are hired; others expect you to pay before starting. Ask the employer or training center about their pricing.

What if I fail the BLS exam?

Most training centers allow you to retake the written exam and skills test on the same day or within a few days at no extra charge. If you fail, the instructor will review the material with you and give you another chance to demonstrate CPR and AED skills before you leave.

Is BLS certification the same as CPR certification?

BLS is broader than basic CPR. BLS includes CPR, rescue breathing, AED use, and team coordination during emergencies. When employers say they want "CPR certification," they usually mean BLS or an equivalent like Red Cross CPR/AED. Always confirm with the employer which credential they accept.