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Lactate (Lactic Acid) TestDiagnostics & Lab Reports · Blood TestUrgent information
Test Purpose & Procedure
Measures lactate (a substance produced by the body when oxygen levels are low, often indicating tissue hypoxia or severe infection). No fasting is required, but resting for 10 minutes before the draw is recommended. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
If levels are elevated, consult your doctor immediately to investigate causes like severe infection (sepsis), heart failure, or liver disease.
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Lactate Dehydrogenase (LDH) TestDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure
Measures LDH (an enzyme found in almost all body tissues, which is released into the blood when tissue is damaged). No special preparation is needed. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
If levels are elevated, consult your doctor to investigate potential tissue damage in the heart, liver, muscles, or blood cells.
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Lead Level Test (Blood)Diagnostics & Lab Reports · Blood TestUrgent information
Test Purpose & Procedure
Measures the amount of lead (a toxic heavy metal) in the blood. No fasting is required. A standard blood draw is performed. It is commonly recommended for young children or workers in high-risk industries.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
If lead levels are elevated, consult a doctor immediately for chelation therapy or environmental intervention to prevent neurological damage.
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Leptin TestDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure
Measures leptin (a hormone produced by fat cells that helps regulate energy balance and appetite). Fasting for 8–12 hours is usually required. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
Consult an endocrinologist if investigating rare genetic obesity disorders or severe metabolic imbalances.
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Liver BiopsyDiagnostics & Lab Reports · Tissue Test
Test Purpose & Procedure
A needle is used to remove a tiny piece of liver tissue for microscopic examination to diagnose liver disease. Fasting for several hours is required. Local anesthesia is used, and the patient must rest afterward to prevent bleeding.
Safety & Precautions
SAFE when performed by a specialist. CAUTION: Risk of minor bleeding or pain at the site.
When to Seek Medical Advice
Discuss the pathology results with a hepatologist or gastroenterologist to determine the exact cause of liver damage.
My Reading Checklist
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Liver Function Test (LFT)Diagnostics & Lab Reports · Blood Test
Test Purpose & Procedure
A group of blood tests (including ALT, AST, ALP, and bilirubin) that provide information about the state of the liver. Fasting for 8–12 hours is usually required. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
If any liver enzymes or bilirubin levels are elevated, consult your doctor to check for liver inflammation, infection, or disease.
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Low-Density Lipoprotein (LDL) CholesterolDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure
Measures LDL (often called "bad" cholesterol because high levels can lead to plaque buildup in the arteries). Fasting for 9–12 hours is strictly required. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
If LDL levels are high, consult your doctor for dietary changes, lifestyle modifications, or cholesterol-lowering medications.
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Lumbar Puncture (Spinal Tap)Diagnostics & Lab Reports · Procedure
Test Purpose & Procedure
A needle is inserted into the lower back to collect cerebrospinal fluid (the fluid surrounding the brain and spinal cord) to check for infections, bleeding, or neurological diseases. Local anesthesia is used. The patient must lie flat for a few hours afterward to prevent headaches.
Safety & Precautions
SAFE procedure. CAUTION: A post-procedure headache is a common, usually temporary, side effect.
When to Seek Medical Advice
Discuss the CSF analysis results with a neurologist to diagnose conditions like meningitis or multiple sclerosis.
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Lupus Anticoagulant TestDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure
Detects lupus anticoagulant (an antibody that paradoxically increases the risk of blood clots, despite its name). Fasting is usually not required, but blood-thinning medications may affect the result. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
If positive, consult a hematologist or rheumatologist to manage the risk of blood clots or pregnancy complications.
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Luteinizing Hormone (LH) TestDiagnostics & Lab Reports · Blood Test
Test Purpose & Procedure
Measures LH (a hormone produced by the pituitary gland that triggers ovulation in women and testosterone production in men). For women, it is often done on specific days of the menstrual cycle. A standard blood draw is performed.
Safety & Precautions
SAFE routine test.
When to Seek Medical Advice
Consult your doctor to evaluate fertility issues, irregular menstrual cycles, or pituitary gland disorders.
My Reading Checklist
These boxes track reading only; they do not represent treatment steps or medical clearance. Checklist selections are not sent to our server.
Lymph Node BiopsyDiagnostics & Lab Reports · Tissue Test
Test Purpose & Procedure
Removes all or part of a lymph node (a small bean-shaped structure that is part of the immune system) to check for infection, lymphoma, or cancer metastasis. Local or general anesthesia is used.
Safety & Precautions
SAFE procedure. CAUTION: Mild pain and bruising at the site are normal.
When to Seek Medical Advice
Discuss the pathology results with an oncologist or surgeon to determine the cause of the swollen lymph node.
My Reading Checklist
These boxes track reading only; they do not represent treatment steps or medical clearance. Checklist selections are not sent to our server.