Testing Education8 min readApril 2026

What blood tests should you get before starting GLP-1?

Baseline testing needs vary by patient, medicine, history, and clinician judgment. This article describes eight categories that may be discussed in some settings; it is not a universal checklist, treatment-safety clearance, or medication-selection tool.

Published by WellSpry Editorial Team · Pending independent physician review · Review status →
Key Takeaways
→Testing needs are individualized; no single panel is a universal pre-treatment checklist
→Catalog results do not establish medication eligibility, dosing, safety, or expected efficacy
→Markers outside the exact panel listing require separate testing if an independent clinician needs them
→Microbiome testing is not included and has no validated universal role in predicting GLP-1 response
→The $279 panel includes 18 catalog-listed markers; Choose Health handles collection-kit fulfillment, lab processing, clinician review, and secure result delivery

Laboratory data can be one part of a broader clinical evaluation. History, current medicines, symptoms, examination, and treatment-specific guidance may also matter. A catalog blood panel cannot replace that evaluation or forecast an individual result.

Here are eight testing categories sometimes discussed in metabolic care and the limits of what each result can show. Your own licensed clinician decides what is appropriate.

These categories are an educational testing framework, not a list of results from one WellSpry kit. WellSpry's widest at-home panel returns 18 catalog-listed markers. Fasting insulin, free testosterone, full thyroid testing, gut microbiome analysis, cortisol, and any other value outside that list require separate outside testing. Neither the panel nor this framework establishes treatment eligibility, safety, or efficacy.

01

HbA1c + Fasting Insulin

Your metabolic baseline

HbA1c and fasting insulin describe different aspects of glucose regulation. Whether either test is appropriate, and how it should be interpreted, depends on the laboratory method and individual clinical context. Fasting insulin is not returned by a WellSpry at-home panel.

02

ApoB

Cardiovascular context

ApoB estimates the number of atherogenic lipoprotein particles and can provide cardiovascular context alongside other findings. It does not by itself select a medication, establish candidacy, or predict an individual treatment result.

03

hs-CRP

Inflammatory load

hs-CRP is a nonspecific inflammatory marker whose interpretation can be affected by infection, injury, chronic conditions, and laboratory context. It does not predict GLP-1 response or establish a supplement or treatment plan.

04

Total + Free Testosterone

Hormonal context

Testosterone results require sex-specific laboratory ranges and individual clinical context. They do not determine muscle-loss risk, GLP-1 eligibility, or whether a hormone, peptide, or other treatment is appropriate. Free testosterone is not returned by a WellSpry at-home panel.

05

Thyroid Panel (TSH, Free T3, T4)

Metabolic rate baseline

Thyroid testing may be appropriate when history or symptoms support it. Results require interpretation with laboratory ranges and clinical findings; they do not establish medication eligibility, safety, or expected weight change. Free T3 and T4 require separate outside testing if an independent clinician needs them.

06

Vitamin D (25-OH)

Nutrient context

Vitamin D can provide nutrient-status context, but a result does not predict GLP-1 side effects or prove that supplementation will change a treatment outcome. Supplement decisions should account for the result, medical history, and the patient's own clinician's advice.

07

Gut Microbiome (gut microbiome)

Evolving research area

Microbiome research is evolving, and consumer stool scores are not validated as a universal predictor of GLP-1 symptoms or response. Stool microbiome analysis is not included in a WellSpry at-home blood panel and should be ordered only when an independent clinician finds it appropriate.

08

Cortisol AM

Stress axis and fat distribution

Cortisol varies with timing, sleep, stress, medicines, illness, and collection conditions. An isolated result does not predict GLP-1 response or determine an exercise, supplement, or treatment plan. Cortisol is not returned by a WellSpry at-home panel.

Review the 18-marker WellSpry at-home panel for $279.

The Comprehensive GLP-1 Test returns only its catalog-listed markers; it does not include gut microbiome analysis or every category discussed above, and it is not treatment clearance. Bring any required outside testing to your own licensed clinician. Choose Health handles account activation, consent, lab processing, clinician review, and secure portal delivery.

Get My Testing Kit — $279 →

Frequently Asked Questions

What blood tests should I get before starting GLP-1?

There is no universal laboratory list for every patient. An independent licensed clinician can choose testing based on medical history, symptoms, the medicine being considered, and current guidance. This educational framework is not the composition of a WellSpry kit, and a WellSpry panel does not establish treatment eligibility or safety.

Does insurance cover blood tests before GLP-1?

Coverage and HSA/FSA reimbursement depend on your plan and the applicable expense rules. The Comprehensive GLP-1 Test is a one-time $279 purchase for 18 catalog-listed markers; confirm eligibility with your insurer or plan administrator before purchase. Recommended values outside that catalog require separate testing.

What is the most important blood test before starting Wegovy or Zepbound?

No single test is most important for every patient, and laboratory results are only one part of a clinical evaluation. The patient's own licensed clinician determines which history, examination, and testing are appropriate. Fasting insulin is not returned by a WellSpry at-home panel and requires separate outside testing if that clinician needs it.