BLS certification shows you know how to perform CPR and use a defibrillator

BLS stands for Basic Life Support. A BLS certification means you have completed a course and passed a test showing you can perform CPR (cardiopulmonary resuscitation) on an adult, child, or infant, and operate an automated external defibrillator (AED). The certification is issued by the American Heart Association or the Red Cross, the two main organizations that teach and certify BLS in the United States.

Employers in healthcare, childcare, fitness, security, and education often require BLS certification as a condition of hire or continued employment. Some positions — like nursing, emergency medical technician (EMT), or lifeguard — cannot be held without it. Other jobs list it as preferred but not required. The certification lasts two years, after which you must renew it by taking a refresher course and passing another test.

BLS certification is not the same as a degree or a professional license. It is a standalone credential that proves competency in one specific skill: keeping someone alive until emergency medical professionals arrive. You can hold BLS certification while working in any field, and many people outside healthcare carry it.

Key Takeaways

  • BLS certification proves you can perform CPR and use an AED, taught and tested by the American Heart Association or Red Cross.
  • Most healthcare jobs, childcare positions, and fitness roles require BLS certification before you start work.
  • The certification is valid for two years and must be renewed through a refresher course and retest.
  • BLS is a single-skill credential, not a professional license or degree, and does not may have access to you for a job on its own.
  • The course typically takes four to six hours and costs between $50 and $150 depending on the provider and location.

Who requires BLS certification

Healthcare employers are the largest group requiring BLS. Hospitals, clinics, nursing homes, and home health agencies almost always require it for nurses, nursing assistants, respiratory therapists, and many other roles. Emergency medical services (EMS) requires BLS for all personnel. Dental offices often require it for hygienists and assistants.

Childcare centers and schools frequently require BLS for teachers, aides, and directors. Fitness facilities require it for personal trainers and group fitness instructors. Lifeguards must hold BLS certification. Security companies, especially those providing on-site security at hospitals or medical facilities, may require it. Some employers in other fields — hotels, corporate offices, government agencies — may require it for staff who work in high-risk environments or have first-aid responsibilities.

Your specific employer's requirement depends on the job title, the industry, and local or state regulations. A job posting will state whether BLS is required, preferred, or not needed. If you are unsure, ask during the interview or contact the human resources department before explore.

What the BLS course covers

The BLS course teaches the steps of CPR for adults, children, and infants. You learn hand placement, compression depth and rate, when and how to give rescue breaths, and how to recognize when CPR is needed. The course also covers how to use an AED — when to turn it on, where to place the pads, and what to do if the person regains consciousness.

You will practice on mannequins under the supervision of an instructor. The instructor watches your technique and corrects your form. Most courses include a written test and a skills test where you perform CPR and AED use on a mannequin while the instructor observes. You must pass both to receive the certification card.

Some courses also cover choking relief (the Heimlich maneuver) and recovery position. The exact content depends on whether you take the American Heart Association or Red Cross course, and which level you choose. Both organizations offer a standard BLS course and a Heartsaver course (a shorter, less technical version for non-healthcare workers).

How long BLS certification lasts and when to renew

BLS certification is valid for two years from the date you pass the course. Your certification card will show the expiration date. Many employers check the expiration date during hiring or at annual reviews, so you need to renew before it expires.

To renew, you take a refresher course and pass a new test. The refresher is shorter than the initial course — usually two to three hours instead of four to six. You do not have to wait until your certification expires to renew; you can renew up to 120 days before expiration. Some employers offer renewal courses on-site; others require you to find a course on your own.

If your certification expires, you cannot straightforward renew it. You must take the full initial course again and pass both the written and skills tests. This takes longer and costs more than a refresher, so it is worth renewing before expiration.

Where to get BLS certification

The American Heart Association and Red Cross are the two main providers. Both offer courses at hospitals, community colleges, fire departments, and training centers. You can search for courses on their websites by entering your zip code.

Many employers offer BLS courses to their staff, sometimes free or at a reduced cost. If your employer does not, you can take a course through a hospital, community college, or independent training center. Some courses are in-person only; others offer online modules followed by an in-person skills test.

The cost varies by provider and location but typically ranges from $50 to $150 for the initial course and $30 to $100 for a refresher. Some employers cover the cost; others require you to pay and may reimburse you after you pass. Check your employer's policy before registering.

BLS versus other first-aid and CPR certifications

BLS is different from a general CPR certification or a first-aid course. A CPR-only certification covers CPR and AED but not other first-aid skills. A first-aid course covers wounds, burns, fractures, and other injuries but may not include CPR. BLS combines CPR and AED with some first-aid elements and is more detailed and technical than either alone.

The Red Cross also offers a Heartsaver CPR/AED course, which is shorter and simpler than BLS and is designed for non-healthcare workers. Heartsaver covers the same CPR and AED skills but with less detail about anatomy and physiology. Some employers accept Heartsaver; others require full BLS. Check your employer's requirement before enrolling.

Advanced Cardiac Life Support (ACLS) is a separate, more advanced certification for healthcare professionals who work in critical care or emergency settings. ACLS builds on BLS and covers medications, advanced airway management, and rhythm interpretation. You must hold current BLS certification to take ACLS.

What BLS certification does and does not do for your career

BLS certification is a requirement for many jobs, not a qualification that gets you hired on its own. It shows you meet a safety standard, but it does not teach you nursing, emergency medicine, childcare, or any other profession. You still need the education, training, and licensing specific to your field.

For example, a nursing assistant needs a state-issued certification or license, which requires classroom and clinical training. BLS is an additional requirement, not a substitute. A personal trainer needs a fitness certification from an accredited organization; BLS is an add-on that makes you more marketable but does not replace that certification.

That said, holding BLS certification can make you a stronger candidate for jobs that require it. It shows you are willing to meet safety standards and have the skills to respond in an emergency. If you are explore for a job that lists BLS as preferred but not required, having it can set you apart.

Frequently Asked Questions

Can I get BLS certification online?

Some providers offer online modules for the classroom portion, but you must complete the skills test in person with an instructor. You cannot learn CPR technique through video alone — an instructor must watch you perform it on a mannequin and correct your form. Expect to spend one to two hours online and two to three hours in person.

What happens if I fail the BLS test?

If you fail the written test or skills test, you can retake it. Most providers allow one free retake; additional attempts may cost extra. You do not have to wait to retake it — many centers offer retests the same day or within a few days. Ask the instructor what you need to practice before the retake.

Do I need BLS if I work in an office job?

Most office jobs do not require BLS. However, some employers require all staff to hold it as part of workplace safety policy, or you may want it voluntarily to be prepared in an emergency. Check your employer's handbook or ask your manager whether it is required or recommended.

How much does BLS certification cost?

Initial BLS courses typically cost $50 to $150, and refresher courses cost $30 to $100. Prices vary by provider, location, and whether the course is in-person or hybrid. Some employers cover the cost; others require you to pay upfront. Ask your employer before registering.

Can I use BLS certification from another country?

BLS certification from the American Heart Association or Red Cross is recognized across the United States. Certification from other countries may not be accepted by U.S. employers. If you hold a foreign certification, contact your employer or the course provider to ask whether you need to take a U.S. course or if reciprocity is possible.