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Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., serum) to determine the polypeptide hormone human placental lactogen (hPL), very similar to growth hormone. This hormone is produced mostly by the placenta in pregnant women. The level of hPL in serum increases with gestational age and is directly correlated with the mass of placental tissue. The use of hPL levels to determine general fetal well-being is not frequently used in routine practice.
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