InstalabGLP-1 Baseline
Should you take a GLP-1 Baseline test?
This test is most useful if any of these apply to you.
18 biomarkers included
- Lipids4
- Total CholesterolSums all cholesterol in your blood, giving a baseline against which later shifts in the individual fractions can be read.Why it mattersAn elevated total is the cue to examine the LDL, HDL, and triglyceride breakdown for heart disease risk.
- TriglyceridesTracks the fat circulating in your blood, a sensitive early signal of insulin resistance that these medications often lower.Why it mattersHigh triglycerides with low HDL point to an insulin-resistant metabolic pattern rather than a purely dietary one.
- HDL CholesterolMeasures the cholesterol carrier that clears fat from artery walls, reflecting the metabolic side of your cardiovascular risk.Why it mattersLow HDL alongside high triglycerides marks the insulin-resistant profile common in obesity and type 2 diabetes.
- LDL CholesterolTracks the cholesterol most likely to build up in artery walls, the most studied driver of heart disease risk.Why it mattersA high value flags heart disease risk that can persist even as weight and blood sugar improve.
- Inflammation1
- hs-CRPHigh-sensitivity C-reactive protein measures low-grade inflammation tied to body fat, a risk pathway sugar and cholesterol miss.Why it mattersAn elevated value signals systemic inflammation linked to cardiovascular risk that often falls with treatment.
- Glucose Regulation3
- GlucoseA fasting snapshot of blood sugar, capturing same-day control that a longer-term average can smooth over.Why it mattersAn elevated fasting value signals abnormal blood sugar and, read with insulin, points toward insulin resistance.
- HbA1cReflects your average blood sugar over the past two to three months, setting the disease-severity benchmark these medications are meant to lower.Why it mattersA high starting value flags established high blood sugar and predicts a larger drop once treatment begins.
- InsulinMeasures how hard your pancreas is working to control blood sugar, a signal that can show insulin resistance before glucose or HbA1c rises.Why it mattersHigh fasting insulin reveals the insulin resistance these therapies target beyond weight loss alone.
- Liver2
- ALTAlanine aminotransferase is a liver enzyme that leaks into blood when liver cells are stressed, screening for fatty liver disease.Why it mattersAn elevated value suggests fat-related liver stress, common in this group and often improved by treatment.
- ASTAspartate aminotransferase is a second liver enzyme that, read with ALT, helps confirm and gauge liver involvement.Why it mattersElevation alongside ALT strengthens the case for fatty liver and sets a reference for tracking improvement.
- Electrolytes5
- CalciumA mineral central to bones, nerves, and muscle, and one that reduced food intake during weight loss can leave short.Why it mattersA low value flags mineral inadequacy to address before caloric restriction deepens it.
- ChlorideA salt read alongside sodium and bicarbonate to round out the picture of hydration and acid-base status.Why it mattersShifts read together with the other electrolytes help distinguish dehydration from other causes.
- SodiumThe main salt in your blood, reflecting hydration and fluid balance that severe nausea and vomiting on these drugs can shift.Why it mattersA baseline reading gives a reference to detect dehydration if severe stomach side effects develop.
- PotassiumA mineral that keeps your heart and muscles working, and one that severe vomiting or diarrhea during treatment can deplete.Why it mattersA baseline value shows whether you start with any margin before sustained gastrointestinal symptoms strain mineral balance.
- BicarbonateReflects your blood's acid-base balance, which repeated vomiting or diarrhea can tip out of its normal range.Why it mattersAn abnormal starting value or later drop can signal fluid loss from sustained gastrointestinal side effects.
- Vitamins3
- Vitamin D (25-hydroxy)Measures a nutrient often low in obesity because it is stored in fat, and one that can fall further as intake drops.Why it mattersA low starting level is the most common deficiency in this group and warrants correction before intake declines.
- Vitamin B12Checks a nutrient needed for nerves and red blood cells that reduced eating or metformin use can deplete.Why it mattersA low or borderline value flags a deficiency to correct before appetite suppression further limits intake.
- Vitamin B9 (Folate)Measures folate, a nutrient for cell building and red blood cells that lower food intake can erode over months.Why it mattersA low value marks a nutritional gap worth closing before weight loss reduces dietary folate.
About GLP-1 Baseline
GLP-1 and related incretin medications like semaglutide and tirzepatide (tirzepatide is a dual-incretin drug that also acts on a second gut hormone, not just GLP-1) change your body across several systems at once: blood sugar, appetite, cholesterol, inflammation, and liver fat. To know what they are doing for you, you need a clear picture of where you started. This panel captures that starting line in a single blood draw.
It also does something a scale cannot. It reveals whether you begin with insulin resistance, hidden fatty liver, quiet inflammation, or a nutrient gap that appetite loss could deepen, so you can act on each before treatment begins.
What This Panel Reveals
The first story is about blood sugar and the hormone that controls it. Glucose gives a same-day snapshot, while hemoglobin A1c (a measure of your average blood sugar over the past two to three months) shows the longer trend. Fasting insulin adds a piece glucose and HbA1c can miss: how hard your pancreas is working to keep sugar normal. Routine insulin testing is not part of standard diabetes guidelines, but here it helps separate people whose sugar is already high from those whose insulin has been quietly climbing for years.
The second story is cardiovascular and inflammatory risk. The lipid markers map your cholesterol and blood fats from several angles, distinguishing a genetic cholesterol pattern from a metabolic one driven by insulin resistance. High-sensitivity C-reactive protein (hs-CRP, a marker of low-grade inflammation) adds a risk signal that sugar and cholesterol do not capture. In people with obesity and type 2 diabetes, higher hs-CRP has been independently linked to greater vascular and all-cause mortality, though how much it adds beyond standard risk factors is still debated.
The third story is your liver. The two liver enzymes, alanine aminotransferase (ALT) and aspartate aminotransferase (AST), leak into the blood when liver cells are under strain, which most often reflects fat building up in the liver. This matters because fatty liver disease is common in exactly the people who start these medications, and GLP-1 therapy tends to lower these enzymes over time. A baseline reading lets you see whether that improvement is happening.
The last story is safety and nutrition. Vitamin D, B12, and folate are often already low in people carrying extra weight, and appetite suppression can pull intake lower still. The electrolytes and minerals, including sodium, potassium, and bicarbonate, document your fluid and acid-base balance. Serious disturbances from these medications are uncommon and mainly arise with severe or sustained nausea, vomiting, or diarrhea, but a calm baseline reading gives a reference if that happens.
How to Read Your Results Together
No single marker tells the whole story. The value is in the patterns you can read across the group.
| Pattern | What It Suggests |
|---|---|
| High HbA1c with high fasting insulin | Insulin-resistant high blood sugar, the core target of GLP-1 therapy and the pattern most likely to improve. |
| Normal HbA1c, high triglycerides, low HDL | Early insulin resistance before blood sugar rises. A reason to act on diet, activity, and treatment now. |
| Raised ALT and AST with metabolic markers off | Likely fat-related liver strain. Note the numbers so you can watch them fall on treatment. |
| Healthy metabolism but low vitamin D, B12, or folate | A nutrient gap to correct before appetite loss deepens it, separate from your cardiovascular risk. |
What to Do with Your Results
Sort your results into the four stories. If the glycemic and lipid markers point to insulin resistance, that is the signal to move on diet, activity, and, where appropriate, medication. If the liver enzymes are raised, record the number so you can watch it fall. If vitamin D, B12, or folate are low, correct them before your appetite drops, since that is when intake falls.
A few results warrant a closer look. Clearly abnormal liver enzymes deserve evaluation for causes beyond fatty liver. If you want to sharpen the cardiovascular picture, an ApoB test counts the actual number of harmful cholesterol particles.
Serial tracking is where this panel earns its keep. Retesting the metabolic and liver markers around three to six months after starting or changing treatment shows whether blood sugar, blood fats, inflammation, and liver enzymes are all moving in the right direction together, or whether one domain is lagging and needs separate attention.
When Results Can Be Misleading
A few things shift several markers at once. Because glucose, insulin, triglycerides, and the liver enzymes all respond to food, a recent meal can push them up, so a 10 to 12 hour fast gives the cleanest read. Acute illness or infection can raise hs-CRP sharply and briefly, so a single high value during a cold says little about your baseline inflammation. Once you are on treatment, an episode of severe or sustained vomiting or diarrhea can distort the electrolytes and minerals, which is exactly why a calm baseline reading is worth having.