Which Lab Tests We Order — And Why More Testing Is Not Better

There is a version of integrative medicine that opens with a two-thousand-dollar panel of every available test. We do not practice that way, and it is worth explaining why, because more data is not the same as better answers.

Testing Should Answer a Question

Before ordering anything, we articulate what we are trying to find out and what we would do differently depending on the result. If a test would not change the plan, it does not get ordered. That single filter eliminates a great deal of unnecessary expense.

What We Commonly Order

• Complete blood count and comprehensive metabolic panel as a baseline
• Inflammatory markers such as CRP and ESR to establish whether inflammation is present
• Full thyroid studies including antibodies, not TSH alone
• Iron studies and ferritin, which are frequently missed in fatigue workups
• Vitamin D, B12, magnesium, and targeted micronutrient status
• Infectious disease testing where exposure history supports it, including Lyme and co-infections

For suspected chronic Lyme, testing requires particular care, since standard serology misses a meaningful share of cases and a negative result does not close the question. We discussed this at length in our article on chronic Lyme disease treatment.

Normal Is Not the Same as Optimal

Reference ranges describe how results distribute across a population, including many people who are unwell. A ferritin at the bottom of the range is technically normal and can still be clinically relevant in someone with profound fatigue and hair loss. Trend matters more than any single value.

The purpose of a lab result is to narrow the possibilities. A result that narrows nothing was probably the wrong test.

Retesting Is Part of the Plan

We retest to confirm that a protocol is working. If markers have not moved after an appropriate interval, that is information — it means the approach needs changing, not extending. This is the same logic behind how we think about what treatment costs.