Rdg1970 said:
I've been doing some early-stage reading. Are there any additional tests beyond what I listed — things that are nice to have?
The information below comes from an article on the National Library of Medicine site.
Labs That Are Necessary for GLP‑1 Safety
According to the article, these are the labs it explicitly says have to be tracked so that prescribing and continued use of GLP‑1 receptor agonists remain safe.
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1. Hemoglobin A1c — REQUIRED
What it's for: keeping an eye on long‑term glycemic control and confirming that treatment is working.
“Patients taking GLP‑1 analogs should periodically have their hemoglobin A1c measured…”
For every GLP‑1 user, this is the main lab that is required.
(Isn’t warfarin rat poison

)
2. INR — REQUIRED only if on warfarin
What it's for: GLP‑1 drugs slow gastric emptying, and that can change how warfarin gets absorbed.
“The clinician should follow the international normalized ratio (INR) in patients prescribed warfarin…”
This lab isn't needed if the patient isn't taking warfarin.
3. Kidney Function Labs — REQUIRED
These consist of:
• Serum creatinine
• eGFR
What they're for: GLP‑1 drugs leave the body through the kidneys, so kidney problems can affect safety.
When a medication is renally eliminated, it means:
• Your kidneys filter the drug out of your blood
• The drug (or its metabolites) is then excreted in urine
• Kidney function directly affects how long the drug stays in your system
• Impaired kidneys = slower clearance, higher drug levels, and higher risk of side effect
“…monitor blood glucose levels, weight, and kidney function.”
Blood tests are always part of kidney function monitoring.
4. Blood Glucose — REQUIRED
What it's for: spotting hypoglycemia (deficiency of glucose in the bloodstream) when GLP‑1 is taken together with insulin or sulfonylureas(organic compounds).
“…monitor blood glucose levels…”
Whether it's a fingerstick or drawn in a lab, it's still a required part of monitoring .