A number on a scale is an output. Thyroid function, insulin sensitivity, sex hormones, cortisol, sleep, and how much lean mass you carry are the inputs — and any one of them can hold weight in place while you do everything correctly. A program that never measures those inputs is guessing, and a program that only measures total body weight cannot tell whether you lost fat or lost muscle.

Pinnacle runs full metabolic labs before prescribing anything: thyroid panel, fasting glucose and insulin, HbA1c, lipids, metabolic panel, and sex hormones where clinically indicated. Then we scan body composition on InBody, which separates fat mass, skeletal muscle mass, and body water. From there the plan is built around what your physiology is actually doing — which sometimes means a GLP-1, and sometimes means treating a thyroid or hormonal problem that has been driving the whole thing.

Weight loss on a GLP-1 is not exclusively fat loss. Published analyses of rapid weight reduction — including GLP-1 trials — indicate that a substantial proportion of total weight lost can be lean mass when protein intake and resistance training are not deliberately managed. That matters well beyond appearance. Skeletal muscle is where you dispose of glucose, it sets a meaningful share of resting metabolic rate, and it is what determines whether you regain the weight when the medication stops.

This is the specific reason Pinnacle scans InBody rather than weighing you. If the scale drops eight pounds and six of them were muscle, that is a failing month regardless of what the number says, and the plan changes: protein target raised, resistance training programmed, titration slowed. A weight loss clinic without body composition testing and without a training floor cannot see that happening — and cannot fix it if it does.

Pinnacle is a cash-based practice and does not bill insurance directly. We provide superbills for out-of-network reimbursement and accept HSA and FSA cards. Some patients have GLP-1 coverage through their pharmacy benefit; we will tell you honestly whether pursuing that is worth the effort in your case.

Candidacy is determined by evaluation, not by a website. In general, adults with a BMI at or above 30, or at or above 27 with a weight-related condition such as prediabetes, type 2 diabetes, hypertension, dyslipidemia, or obstructive sleep apnea, are considered for GLP-1 therapy. Patients who have lost and regained repeatedly, or who plateau on a diet that should be working, are often the clearest candidates for metabolic lab work regardless of medication.

GLP-1 therapy is not prescribed to patients with a personal or family history of medullary thyroid carcinoma or MEN2, during pregnancy or while breastfeeding, or where a history of pancreatitis, gastroparesis, or an active eating disorder makes it inappropriate. Some patients leave a consultation with a thyroid diagnosis and a plan rather than a prescription. That is a successful visit.