A Cardiotocography (CTG, NST) is a diagnostic procedure test of the pregnancy. It shows baby's heart rate and the mother's contractions. No ionising radiation when done without X-ray guidance.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Baby's heart rate and the mother's contractions.
Reduced baby movements, labour monitoring.
Follow the centre's instructions; most need no special preparation.
No ionising radiation when done without X-ray guidance.
20 to 40 minutes. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
Diagnostic procedure
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does a ctg show?
Baby's heart rate and the mother's contractions.
Why is a ctg done?
Reduced baby movements, labour monitoring.
How do I prepare for a ctg?
Follow the centre's instructions; most need no special preparation.
Does a ctg use radiation?
No ionising radiation when done without X-ray guidance.
How long does a ctg take?
20 to 40 minutes
Why is Cardiotocography (CTG, NST) done?
Reduced baby movements, labour monitoring.
How do I prepare for Cardiotocography (CTG, NST)?
Follow the centre's instructions; most need no special preparation.
Is Cardiotocography (CTG, NST) safe in pregnancy?
No ionising radiation when done without X-ray guidance.
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