I am 19 years old and I have a receding hairline. Should I go in for a FUE? (Photo)

Photos cannot assess if you would be a "good" candidate for surgery.  Usually this involves seeing a doctor in person.  Hair transplant surgery is not about "how many grafts" you may need.  It is more about meeting your goals and expectations. 

19 years old is too young for a transplant, barring exceptional circumstances. A transplant that adds to your hairline at 19 will almost certainly look bad and out of place by the time you're 30. You should wait until you're 25 at the minimum, so your surgery can be planned around your future balding pattern, not just what your hair looks like today. For now focus on medicines that will prevent hair loss, not restore it. 

That is not a hair loss because of ongoing process of androgenetic alopecia but  a simple juvenile type maturing of frontal hair line.  That is seen almost every young boys almost between 16-21 that have a very rounded hairline without recession in the corners.  Recession in the corners is a sign of mature pattern male frontal hair line.

hi thereThanks for the photosYou are too young for a hair transplantMedicines and a regular hair care program will help you greatly

It's difficult for any 19 year old to understand why a hair transplant is not advisable. But it's not. A young man who starts losing hair at 19 is likely to develop significang balding later in life. Options to prevent further loss need to be considered right now (finasteride and minoxidil) as well as a plan for how hair transplantation can be used in the future (assuming you don't have miniaturization in the donor area). Transplanting grafts up front in the temples might sound like a good idea at age 19 but will not look good at age 30. You need to find a specialist who can maximize your density and appearance over the next 60-75 years. Transplanting the frontal hairline is likely not part of that plan.

hair loss is progressive  What are you using for a preventative regimen? An organic shampoo as well as medications like Finasteride and Minoxidil can be very helpful in maintaining and keeping your existing hair.

Your biggest enemy is the progressive thinning leading to a balding pattern that is not evident at this point in time. The degree of thinning that you are experiencing would suggest that you should see a doctor who most likely will get Bulk Measurements of your hair to determine the degree of the thinning that you are presently having. If the diagnosis is early genetic hair loss (the most common cause of hair loss in young men), then the best treatment would be the drug finasteride which is highly effective in men of your age and may not only stop the hair loss but possibly reverse it. If you are developing a more advanced balding pattern the best test to get will determine the Bulk Measurements of your hair and this will show, over a one-year time frame, how effective the treatment will be. Once you know this information, then you and your doctor need to develop a MASTER PLAN which will define what you need to do over the years to come.

I would recommend that you start a hair restoration plan with a hair restoration specialist. A hair transplant is probably not advisable at this early stage but the most important thing is to do something to stop losing more hair. Finasteride and Minoxidil are the definite and PRP or Platelet Rich Plasma is a very good option for you right now as well.