Lab Literacy
Lab Literacy
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Why do I need to 'Fast' before some blood tests?
Created by Sara Ansari (2 months ago)
Eating changes the levels of sugar, fats, and certain enzymes in your blood. Fasting (usually 8-12 hours) ensures the baseline reading is accurate.
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What is 'CRP' (C-Reactive Protein)?
Created by Harpreet Kaur (2 months ago)
CRP is a marker for inflammation in the body. It doesn't tell you *where* the inflammation is, but it alerts the doctor that something is wrong.
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What does 'Positive' vs 'Reactive' mean on a report?
Created by Priya Joshi (2 months ago)
Both generally mean the substance tested for was found. 'Reactive' is commonly used in STI or Hepatitis screenings to indicate the presence of antibodies.
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What does 'High LDL' on a lipid profile mean?
Created by Maria Fernandes (2 months ago)
LDL is 'Bad Cholesterol.' High levels can lead to plaque buildup in your arteries, increasing the risk of heart attack and stroke.
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What does a 'High WBC' count indicate?
Created by Krishna Sharma (2 months ago)
White Blood Cells (WBC) are your body's fighters. A high count usually means your body is fighting an infection or inflammation.
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What is 'Creatinine' and why does it matter?
Created by Arman Ansari (2 months ago)
Creatinine is a waste product filtered by the kidneys. High levels in the blood suggest the kidneys are not functioning efficiently.
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What is 'Bilirubin' in a Liver function test?
Created by Simran Kaur (2 months ago)
Bilirubin is a yellowish pigment. High levels can cause Jaundice (yellowing of eyes/skin) and indicate liver or bile duct issues.
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What is 'HbA1c' and why is it better than a Fasting test?
Created by Imran Shaikh (2 months ago)
Fasting sugar shows your blood sugar at one moment. HbA1c shows your *average* blood sugar over the last 2-3 months, making it the gold standard for diabetes management.
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What is a 'Vitamin D' deficiency level?
Created by Arjun Bansal (2 months ago)
In most labs, a level below 20 ng/mL is considered a deficiency. 30–50 ng/mL is generally considered the optimal range for bone and immune health.
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What is the difference between 'T3, T4, and TSH'?
Created by Maria Fernandes (2 months ago)
T3 and T4 are hormones made by the thyroid. TSH is the signal from the brain telling the thyroid to work. High TSH usually means an *underactive* thyroid (Hypothyroidism).
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