Essential labs for semaglutide, tirzepatide, and GLP-1 medication monitoring
The short answer
GLP-1 Monitoring & Weight Management bundles 10 tests — Comprehensive Metabolic Panel, Lipid Panel and Hemoglobin A1c plus 7 more — for $169.99 all-in (about $17.00 per test). Fast 8–12 hours before the draw; results post in 2–5 business days. Physician-authorized with no doctor's visit or insurance needed; one draw at Quest or Labcorp.
Other Labs
Starting at $477
+ lab fees
TestWell
$169.99
GLP-1 receptor agonists (semaglutide, tirzepatide, liraglutide) are transforming weight management and diabetes care, but they require regular lab monitoring. This panel covers the markers clinicians recommend tracking during GLP-1 therapy. The CMP evaluates liver and kidney function — critical because GLP-1 medications are processed by these organs. TSH screens for thyroid changes, as GLP-1 medications carry a boxed warning for medullary thyroid carcinoma risk. Hemoglobin A1c tracks blood sugar improvements and Fasting Insulin measures insulin-resistance reduction. The Lipid Panel monitors cardiovascular risk improvements, and the CBC with Differential screens for rare hematological side effects. Because GLP-1s suppress appetite, nutritional deficiencies are common — Vitamin B12, Ferritin, and Vitamin D catch the three that drop first on reduced food intake. hs-CRP tracks the systemic-inflammation improvement that typically accompanies weight loss. For plateau investigation, the optional add-ons below help: Leptin and Adiponectin profile the fat-tissue hormones that shift during weight loss, and AM Cortisol flags stress-driven stalls. This panel is recommended at baseline, 3 months, 6 months, and annually while on GLP-1 therapy.
Quarterly GLP-1 safety + efficacy monitoring: CMP (kidney/liver), A1c, Fasting Insulin, Lipid Panel, TSH, CBC with differential, plus the nutrition + inflammation markers that move on appetite-suppressed diets (Vitamin B12, Ferritin, Vitamin D, hs-CRP). Optional add-ons — Leptin, AM Cortisol, Adiponectin — for plateau investigation.
Anyone on semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), liraglutide (Saxenda, Victoza), or other GLP-1 medications. Required for safe ongoing therapy monitoring.
Sample Type
Blood draw
Fasting
Required
Results In
2–5 business days
Biomarkers
39 across 10 tests
10 individual tests · 39 biomarkers measured — each test linked so you can learn more.
Fasting for 10–12 hours required for accurate insulin, glucose, and lipid results. Water is okay. Take your GLP-1 medication as scheduled.
The short answer
Worth it for anyone on a GLP-1 — semaglutide (Ozempic, Wegovy) or tirzepatide (Mounjaro, Zepbound) — who wants to confirm the therapy is safe and working. Ten tests cover organ safety (liver + kidney), efficacy (A1c, insulin, lipids), and the B12/iron/vitamin-D deficiencies that appetite suppression quietly causes. Especially valuable if you're getting your GLP-1 through telehealth or a compounding pharmacy that isn't ordering labs for you.
We would rather you order the right test than the most expensive one.
A fasting draw (9-12 hours, water okay) at Quest or Labcorp, or at-home phlebotomy where available. For weekly injections, draw at a consistent point in your cycle — often 3-4 days post-injection — so your trend isn't skewed by where you are in the dosing week.
The markers that matter most and what an out-of-range value can mean. Reference ranges vary by lab, age and sex.
| Marker | Typical range | What it means |
|---|---|---|
| CMP (liver enzymes + creatinine) | Within lab reference ranges | GLP-1s can transiently raise liver enzymes (~5% of patients) and, with dehydration from nausea, occasionally stress the kidneys. The CMP catches both early so dose can be adjusted before anything progresses. |
| HbA1c + fasting insulin | A1c <5.7%; insulin varies | The efficacy headline — both should improve as you lose weight and insulin sensitivity returns. Flat numbers despite the drug are worth discussing with a clinician. |
| Vitamin B12 / Ferritin / Vitamin D | Within lab reference ranges | Eating less means absorbing fewer micronutrients; these three fall first. Their deficiency symptoms mimic side effects of the drug itself, so catching a true deficiency prevents misattribution. |
| Lipid Panel + hs-CRP | LDL varies; hs-CRP <1 mg/L | Both should trend down with weight loss — falling lipids and falling inflammation are objective confirmation the therapy is improving cardiometabolic risk, not just the scale. |
This section medically reviewed by Youmna DiStefano, MD — updated July 2026. General health information, not medical advice; interpret results with a qualified clinician.
A GLP-1 Monitoring & Weight Management costs $169.99 at TestWell — $175.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible.
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Quest or Labcorp) | $169.99 | $175.99 | Includes the one $6 lab processing fee, charged once per order |
Competitor prices are read from the linked public pages and re-checked regularly; the labs' sites may add taxes or change prices without notice.
Compare more: Quest Diagnostics price list · Labcorp price list · Quest vs Labcorp · Lab test price checker
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
Starting at $477 at other labs
TestWell Price
$169.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
Individual tests that complement this panel
GLP-1 Monitoring & Weight Management
$169.99