Home  >  Health Encyclopedia  >  Health Encyclopedia Home

Health Encyclopedia

 

Health Encyclopedia Home



Leptin (Blood)

Leptin (Blood)

Does this test have other names?

Leptin serum test

What is this test?

This test measures the amount of leptin in your blood.

Leptin is a hormone that helps regulate your body weight by controlling your appetite and energy level. This test is used to figure out how much body fat you have.

This test may be a more accurate way of finding out your amount of body fat than using your body mass index (BMI). BMI is figured out from your weight and height.

Generally, the amount of leptin in your blood is proportional to the amount of fat tissue in your body. Researchers believe some people may have leptin in their body, but it doesn't signal to the brain that they are full, so they keep eating.

Obesity is a serious condition that can cause a number of life-threatening diseases, including diabetes, heart disease, high blood pressure, stroke, and cancer. Researchers are exploring whether leptin levels could help figure your risk of having a heart attack or heart disease, but this is still experimental.

This test can also be used to assess infertility and look at people with delayed puberty.

Why do I need this test?

You may have this test if your doctor needs to find out how much body fat you have.

Your child might need this test if he or she has delayed puberty. The test can help your child's doctor look for possible causes of this.

What other tests might I have along with this test?

Your doctor may also order tests to assess your body fat and find out whether you have diabetes, high blood pressure, or cardiovascular disease. These tests may include:

  • A1C, for diabetes

  • Blood pressure

  • Dual-energy absorptiometry scan, to look at muscle, bone, and body fat

  • BMI

What do my test results mean?

Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider.

The amount of leptin in your body varies from day to day, so more research is needed to understand how to use the lab values from this test.

In general, concentrations of leptin are higher in women than men. Levels decrease as you age. 

How is this test done?

The test requires a blood sample, which is drawn through a needle from a vein in your arm.

Does this test pose any risks?

Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore.

What might affect my test results?

Pregnancy can affect your results, as can overeating.

How do I get ready for this test?

You don't need to prepare for this test.

  

 
Related Items
Content Type 167
  Acetylcholine Receptor Antibody (Blood)
  Albumin (Blood)
  Alpha-Fetoprotein (Blood)
  Alpha-Fetoprotein Tumor Marker (Blood)
  Ammonia
  Amphetamine Screen (Blood)
  Amylase (Blood)
  Angiotensin Converting Enzyme (Blood)
  Antidiuretic Hormone
  Antimitochondrial Antibody and Antimitochondrial M2 Antibody
  Apolipoprotein A
  Apolipoprotein B100
  Benzodiazepines (Blood)
  Bicarbonate
  Direct Bilirubin
  BNP (Blood)
  C-Peptide (Blood)
  CA 125
  CA 19-9
  CA 27-29
  Calcium (Blood)
  Carcinoembryonic Antigen
  Cardiac Biomarkers (Blood)
  Total and Free Carnitine
  Catecholamines (Blood)
  Ceruloplasmin (Blood)
  Chloride
  Cholesterol
  Cholinesterase (Blood)
  Clonazepam Drug Level (Blood)
  Creatine Kinase (Blood)
  Creatinine Clearance
  Creatinine (Blood)
  Cystatin C
  D-Dimer
  Dehydroepiandrosterone and Dehydroepiandrosterone Sulfate
  Digoxin Drug Level
  Erythropoietin (Blood)
  Estradiol (Blood)
  Ethanol (Blood)
  Ferritin (Blood)
  Fluphenazine Drug Level (Blood)
  Folate
  Follicle-Stimulating Hormone
  Free Androgen Index
  Gastrin
  Growth Hormone with Stimulation (Blood)
  Growth Hormone with Suppression (Blood)
  Growth Hormone (Blood)
  HCG (Blood)
  HDL Cholesterol
  Insulin-Like Growth Factor
  Total and Free Insulin (Blood)
  Iron (Blood)
  Iron and Total Iron-Binding Capacity
  Ketone Bodies (Blood)
  Lactose Tolerance (Blood)
  LDL Cholesterol
  Adult Lead (Blood)
  Lead (Blood)
  Lipase
  Lipid Panel with Non-HDL Cholesterol
  Lipoprotein-Associated Phospholipase A2
  Lithium
  Lipoprotein(a) Cholesterol
  Luteinizing Hormone (Blood)
  Magnesium (Blood)
  Mercury (Blood)
  Metanephrines (Blood)
  Methylmalonic Acid (Blood)
  Myoglobin (Blood)
  Pancreatic Polypeptide
  Parathyroid Hormone
  Progesterone
  Proinsulin (Blood)
  Prolactin (Blood)
  Salicylate (Blood)
  Free Light Chains (Blood)
  Sodium (Blood)
  Free and Bound Triiodothyronine (Blood)
  Free and Bound T4
  Tartrate-Resistant Acid Phosphatase
  Tegretol (Blood)
  Free Testosterone
  Total Testosterone
  Theophylline
  Thyroid Antibody
  Thyroid Antithyroglobulin Antibody
  Thyroid Stimulating Hormone
  Total Copper (Blood)
  Transferrin
  Tricyclic Antidepressant Screen
  Triglycerides
  Troponin
  Trypsin (Blood)
  Blood Urea Nitrogen
  Uric Acid (Blood)
  VLDL Cholesterol