Detects the genetic material (DNA/RNA) of HIV using PCR and measures the amount present (viral/bacterial load).
Shows how much of the organism is present, helping doctors decide on treatment and check that it is working (falling levels). Used in HIV infection.
Fever, rash, jaundice, suspected exposure to infection, before surgery or pregnancy, as advised by a doctor.
No fasting needed.
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PCR detects the organism itself, so it is very useful early in infection; antibody tests show the body's response and are useful later.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Usually a blood sample; for some infections a swab, CSF, urine or other sample is used — as advised by your doctor.
Usually within 6–7 days after the sample reaches the lab. You will receive the report online.
