Yellow line in t section is positive or negative
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In pregnancy test
In a home pregnancy test (urine hCG strip/cassette), the T line (Test line) works like this:
T Line in a Pregnancy Test
| Line Appearance | Result | Meaning |
|---|---|---|
| T line appears (any shade, even faint) | Positive | hCG detected - pregnant |
| T line absent | Negative | hCG not detected - not pregnant |
How it works
- The C line (Control) always appears if the test worked correctly - it confirms the test is valid.
- The T line (Test line) appears only when hCG (human chorionic gonadotropin) - the pregnancy hormone - is present in the urine.
Key points
- Even a faint yellow/pink T line = POSITIVE. The color intensity does not matter; any visible line at the T position indicates pregnancy.
- Only C line visible = Negative.
- No lines at all = Invalid test (discard and retest).
Why the line may look yellow/faint
Early in pregnancy (very low hCG levels), the T line may appear as a faint colored line (sometimes yellowish rather than a vivid pink/red). This is still considered a positive result.
Bottom line: A yellow T line = positive pregnancy test. You should confirm with a healthcare provider.
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