Before a single GLP-1 medication is prescribed at Scale Solutions, every patient undergoes a comprehensive laboratory evaluation. Dr. Don Gates, the physician at Scale Solutions in Savannah, Georgia, requires this not as a formality but as a clinical necessity — because the results of that lab work directly shape whether a patient is a safe candidate for GLP-1 therapy, which medication is most appropriate, what dose to start at, and how closely the patient should be monitored. In this article, Dr. Gates walks through the lab work involved and explains what each test reveals.
Why Lab Work Comes First: Dr. Don Gates’ Clinical Rationale
“You cannot prescribe responsibly without knowing the patient’s metabolic baseline,” Dr. Don Gates says plainly. GLP-1 receptor agonists are powerful medications that affect glucose metabolism, gastric function, and — through weight loss — multiple organ systems. Prescribing them without baseline laboratory data is not simply suboptimal; it is clinically irresponsible, because it leaves the physician blind to conditions that affect prescribing decisions.
The pre-treatment laboratory panel at Scale Solutions serves several purposes simultaneously: it screens for contraindications to GLP-1 medications, it establishes the metabolic baseline against which future results will be compared, it identifies comorbid conditions that need to be addressed or accounted for, and it provides the data foundation for personalized treatment planning. Dr. Don Gates at Scale Solutions in Savannah, Georgia views this panel as one of the most important clinical investments a patient can make before starting treatment.
Key Lab Tests Dr. Don Gates Orders Before GLP-1 Initiation
HbA1c and Fasting Glucose
HbA1c — glycated hemoglobin — reflects average blood glucose over approximately 90 days and is the primary screening and diagnostic tool for diabetes and prediabetes. Fasting glucose provides a same-day snapshot of glucose regulation. Together, these two tests establish whether a patient has normal glucose metabolism, prediabetes, or diabetes — a distinction that profoundly affects GLP-1 prescribing.
Patients with diabetes who are already on glucose-lowering medications (particularly insulin or sulfonylureas) require careful coordination when starting GLP-1 therapy, as the glucose-lowering effect of GLP-1 agents may necessitate dose reductions in concurrent medications to prevent hypoglycemia. Patients with prediabetes may benefit particularly from GLP-1 therapy, given these medications’ documented efficacy in diabetes prevention trials, according to data from the SELECT trial published in The New England Journal of Medicine.
Comprehensive Metabolic Panel (CMP)
The CMP includes kidney function (creatinine, BUN, eGFR), liver function (ALT, AST, bilirubin, alkaline phosphatase), electrolytes (sodium, potassium, chloride, bicarbonate), and blood glucose. This panel is essential for:
- Establishing renal baseline — important because dehydration from reduced food and fluid intake can affect kidney function during GLP-1 therapy
- Assessing hepatic function — particularly relevant in patients with obesity, who have elevated rates of non-alcoholic fatty liver disease (NAFLD)
- Evaluating electrolyte status — particularly potassium, which may be affected in patients on diuretics or ACE inhibitors
Complete Lipid Panel
A fasting lipid panel — total cholesterol, LDL, HDL, and triglycerides — establishes cardiovascular risk baseline and also provides metabolic information useful for personalized dietary guidance. GLP-1 therapy often produces favorable lipid changes alongside weight loss; tracking these from a documented baseline allows Dr. Don Gates to demonstrate metabolic improvements to patients and assess cardiovascular risk reduction over time.
Thyroid Function Tests
TSH (thyroid-stimulating hormone) and free T4 are ordered at baseline for two distinct reasons. First, hypothyroidism is a common and treatable cause of weight gain and metabolic slowdown — a patient with undiagnosed hypothyroidism will have a significantly harder time losing weight even on GLP-1 therapy. Second, and more specifically relevant to GLP-1 prescribing: GLP-1 receptor agonists carry an FDA black box warning regarding association with thyroid C-cell tumors in rodent studies, and while no causal link in humans has been established, Dr. Don Gates reviews personal and family history of thyroid conditions carefully as part of pre-treatment screening.
More information on GLP-1 prescribing standards at Scale Solutions is available through the practice’s coastal Georgia GLP-1 news resource.
Complete Blood Count (CBC)
The CBC assesses red blood cells (ruling out anemia, which can cause fatigue that would otherwise be misattributed to the medication or the treatment program), white blood cells (flagging infection or immune concerns), and platelets (relevant for patients on anticoagulants). This baseline helps Dr. Don Gates interpret any future symptomatic complaints that might arise during treatment.
Additional Tests Based on Individual Profile
Depending on the patient’s history, Dr. Don Gates may also order fasting insulin (to assess insulin resistance quantitatively), a urine microalbumin to creatinine ratio (in diabetic patients to assess renal status), a vitamin D level (common deficiency in obesity that can affect bone density and immune function), or other targeted tests. The laboratory panel is not a fixed menu — it is individualized to the patient’s clinical profile.
How Lab Results Inform the GLP-1 Prescription at Scale Solutions
Once laboratory results are available, Dr. Don Gates uses them to confirm candidacy, select the most appropriate medication, determine starting dose, and calibrate the monitoring schedule. A patient with stage 2 chronic kidney disease requires more conservative fluid management guidance and closer renal monitoring. A patient with an HbA1c of 9.5 percent is a diabetes patient, not a pre-diabetes patient, and the GLP-1 choice and concurrent medication adjustments reflect that. These are the kinds of clinical distinctions that require physician-level judgment, which is why Scale Solutions in Savannah, Georgia is built around physician oversight rather than delegated prescribing.
For an overview of Dr. Gates’ full clinical approach, the Scale Solutions physician profile is available online.
Frequently Asked Questions
Where did Dr. Don Gates train, and what qualifies him to manage GLP-1 therapy?
Dr. Don Gates trained at Loma Linda University and has been practicing bariatric and medical weight loss medicine since 1999. His over 25 years of clinical experience in this specialty include extensive management of patients on GLP-1 and other metabolic medications.
Do I need to fast before my lab work at Scale Solutions?
Yes, most of the pre-treatment laboratory tests require an 8-hour fast for accurate results, particularly fasting glucose and lipid panels. Dr. Don Gates’ team will provide specific instructions when lab work is ordered. Drinking water before the draw is fine.
How long does it take to get lab results back before starting GLP-1 treatment at Scale Solutions?
Most routine laboratory panels return within 1 to 3 business days when processed through the laboratory Scale Solutions uses. Dr. Don Gates reviews results and contacts patients promptly, and a follow-up visit or phone consultation is scheduled to review findings and initiate treatment.
What happens if my lab results show an issue that affects GLP-1 candidacy?
If lab results reveal a contraindication or a condition that requires further evaluation, Dr. Don Gates will discuss the findings with the patient and develop a plan — which may include treatment of the underlying condition before starting GLP-1 therapy, use of an alternative medication, or referral to a specialist as appropriate.
Does Scale Solutions re-check labs during GLP-1 treatment?
Yes. Ongoing laboratory monitoring is a standard part of the Scale Solutions GLP-1 program. Dr. Don Gates typically re-checks metabolic panels and other relevant labs at 12-week intervals, with more frequent monitoring for patients with diabetes or renal conditions.
Medical Disclaimer: This article describes general pre-treatment laboratory practices and is for educational purposes only. Specific laboratory requirements and interpretations for any individual patient should be determined by a licensed physician based on that patient’s complete health history and clinical profile.
Starting GLP-1 treatment right means starting with the right clinical foundation. Dr. Don Gates at Scale Solutions ensures every patient is thoroughly evaluated before any prescription is issued. We work exclusively with licensed, accredited pharmacies and hold ourselves to the highest safety standards. Call (912) 352-7546, email info@scale-solutions.com, or book your consultation today. Serving patients in Savannah, Pooler, and Hinesville, Georgia.
Frequently Asked Questions
Where did Dr. Don Gates train, and what qualifies him to manage GLP-1 therapy?
Dr. Don Gates trained at Loma Linda University and has been practicing bariatric and medical weight loss medicine since 1999. His over 25 years of clinical experience in this specialty include extensive management of patients on GLP-1 and other metabolic medications.
Do I need to fast before my lab work at Scale Solutions?
Yes, most of the pre-treatment laboratory tests require an 8-hour fast for accurate results, particularly fasting glucose and lipid panels. Dr. Don Gates’ team will provide specific instructions when lab work is ordered. Drinking water before the draw is fine.
How long does it take to get lab results back before starting GLP-1 treatment at Scale Solutions?
Most routine laboratory panels return within 1 to 3 business days when processed through the laboratory Scale Solutions uses. Dr. Don Gates reviews results and contacts patients promptly, and a follow-up visit or phone consultation is scheduled to review findings and initiate treatment.
What happens if my lab results show an issue that affects GLP-1 candidacy?
If lab results reveal a contraindication or a condition that requires further evaluation, Dr. Don Gates will discuss the findings with the patient and develop a plan — which may include treatment of the underlying condition before starting GLP-1 therapy, use of an alternative medication, or referral to a specialist as appropriate.
Does Scale Solutions re-check labs during GLP-1 treatment?
Yes. Ongoing laboratory monitoring is a standard part of the Scale Solutions GLP-1 program. Dr. Don Gates typically re-checks metabolic panels and other relevant labs at 12-week intervals, with more frequent monitoring for patients with diabetes or renal conditions.
About the Physician
Dr. Donald L. Gates, MD
Dr. Don Gates is a Loma Linda-trained physician practicing bariatric medicine in coastal Georgia since 1999. He leads Scale Solutions Medical Weight Loss, with offices in Savannah, Pooler, and Hinesville, GA. He provides physician-supervised GLP-1 therapy — including semaglutide and tirzepatide — paired with personalized nutrition and metabolic guidance. Spanish-speaking. Read full bio →
Call to schedule: (912) 352-7546 · Email: info@scale-solutions.com
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Bariatric medicine since 1999 — Loma Linda trained, Spanish-speaking, serving Savannah, Pooler, and Hinesville.