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Look at CLS/MT (Clinical Laboratory Scientist/Medical Technologist) or CLT/MLT (Clinical Laboratory Technician/Medical Laboratory Technician) programs. American Medical Technologists, the National Credentialing Agency for Laboratory Personnel or the Board of Registry of the American Society for Clinical Pathology are some of the better known certification bodies.  Professional associations vary in certification requirements for lab scientists, therefore check with each association. Employers may require specific certifications. Gather all of your important documents verifying your work and training experience (employer documentation, letters of authenticity, certificates, etc) and your education (transcripts and degrees). You must also apply to take the exam, paying an application fee between $100-200.  Different certification organizations may have slightly different requirements and application fees. Following the approval process of your application, you will be able to schedule the date of your exam. For some licensing bodies, you have a three-month window to schedule the exam.  Start studying as soon as you finish the application so you have plenty of time. There are many online practice tests and review courses available to help you study. If you know other people taking the exam around the same time, try forming a study group. Practice tests are the best way to gauge your knowledge. Take one every few weeks to see how you’re improving.   Study early and often. Don’t try to learn too many things at once or you may get study fatigue. Focus on one or two topics each day to study in depth. Review the same subjects every few days to keep them fresh. On the day of the exam, make sure you aren’t hungry and have eaten a decent meal. The exam is taken on the computer and is called an adaptive test: the exam gets harder as you get more questions correct. Make sure you have the basic computer skills necessary to take an exam on the computer.
Pursue national certification. Apply for the certification. Schedule your exam. Study for the certification exam. Take the certification exam.