If you are doing everything right and still feel run down, the problem might not be your effort. It might be your levels. Fatigue, brain fog, low motivation, and that heavy feeling by midafternoon are some of the most common things patients mention before a wellness workup. Often, the answers are sitting in a simple blood draw.

At Luxe Med in Las Vegas, a wellness workup starts with labs, not guesses. Here are five markers worth checking when your energy has gone missing.

1. Vitamin D

Even in sunny Las Vegas, low vitamin D is surprisingly common. Office jobs, sunscreen, and long summers spent indoors all keep levels down. Low vitamin D is linked to fatigue, low mood, and muscle weakness. A blood test tells you exactly where you stand, and correcting a deficiency is usually straightforward.

2. Vitamin B12

B12 helps your body make red blood cells and keeps your nerves working properly. When it runs low, people often notice tiredness, brain fog, or tingling in the hands and feet. It is especially worth checking if you eat little or no animal products, take acid reflux medication, or are over 50.

3. Thyroid (TSH and Free T4)

Your thyroid sets the pace for your metabolism. An underactive thyroid can make you feel cold, sluggish, constipated, and unusually tired, and it can be easy to blame those symptoms on stress or aging. A TSH test with free T4 gives a clear first look at how your thyroid is doing.

4. Iron and Ferritin

Iron carries oxygen in your blood, and ferritin shows how much iron you have stored. You can feel exhausted from low iron stores even before full anemia shows up on a standard panel. This one matters a lot for women with heavy cycles, endurance exercisers, and anyone who bruises easily or feels dizzy standing up.

5. Testosterone

Testosterone is not only a men’s hormone. Both men and women need healthy levels for energy, motivation, muscle maintenance, and libido. Levels naturally decline with age, and symptoms of low testosterone overlap heavily with general burnout, which is why testing matters instead of assuming.

What a Wellness Workup Looks Like at Luxe Med

It starts with a conversation about your symptoms, history, and goals. Then we order the labs that make sense for you, often through Quest Diagnostics, and review the results together with a clear plan. That plan might include nutrition changes, targeted supplementation, vitamin injections, hormone support, or referrals, depending on what your labs show. No cookie cutter protocols. Your numbers guide the plan.

Frequently Asked Questions

Do I need to fast before wellness labs?
Some tests are more accurate fasting, so we will tell you exactly how to prepare when your labs are ordered. When in doubt, plan for a morning draw before breakfast.

How soon will I get results?
Most lab results come back within a few days. We will go over what they mean in plain language and lay out next steps, not just hand you a printout.

What if my labs come back normal?
Normal labs are still useful because they rule things out. If your numbers look fine and symptoms persist, we look deeper at sleep, stress, nutrition, and other hormone pathways together.

Can I just start supplements instead?
You can, but supplementing blindly is expensive and sometimes counterproductive. Testing first means you only take what you actually need, at doses that make sense for your levels.