3 doctors weighed in:

How long does it take to diagnose als?

3 doctors weighed in
Dr. Michael DePietro
Internal Medicine - Pulmonary Critical Care
1 doctor agrees

In brief: Depends

There are cases in which the physical signs and symptoms are so characteristic that the diagnosis can be made on the first office visit, or at least strongly suspected.
In other cases if the situation is less clear, other entities may need to be ruled out, such as spinal cord diseases etc. This may require tests like mri, or electromyogram. The time to get these tests can vary.

In brief: Depends

There are cases in which the physical signs and symptoms are so characteristic that the diagnosis can be made on the first office visit, or at least strongly suspected.
In other cases if the situation is less clear, other entities may need to be ruled out, such as spinal cord diseases etc. This may require tests like mri, or electromyogram. The time to get these tests can vary.
Dr. Michael DePietro
Dr. Michael DePietro
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In brief: Not long

Once the weakness becomes apparent, the muscular atrophy and fasciculations start to appear, and within a period of a few weeks the diagnostic studies can be completed.
Best to start a drug such as Riluzole as early as possible to provide best outcomes.

In brief: Not long

Once the weakness becomes apparent, the muscular atrophy and fasciculations start to appear, and within a period of a few weeks the diagnostic studies can be completed.
Best to start a drug such as Riluzole as early as possible to provide best outcomes.
Dr. Bennett Machanic
Dr. Bennett Machanic
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