2 doctors weighed in:
Reticulocyte count test result - should a new baby have a high or low result?
2 doctors weighed in

Dr. Joseph Woods
Pathology
In brief: High neo,/down by10d
Reticulocyte index/count is a measure of red cell production.
This is at around 3-7% at birth to 12 hours of life, and goes down to about 0-1% by 10 days of age. The value of 3-7% is high for an adult which has a reading of 0.5-1.5%, as reticulocytes make up 1% of red cells in the body. This is what a baby should come down to. It may also be high in forms of anemia due to RBC destruction.

In brief: High neo,/down by10d
Reticulocyte index/count is a measure of red cell production.
This is at around 3-7% at birth to 12 hours of life, and goes down to about 0-1% by 10 days of age. The value of 3-7% is high for an adult which has a reading of 0.5-1.5%, as reticulocytes make up 1% of red cells in the body. This is what a baby should come down to. It may also be high in forms of anemia due to RBC destruction.
Dr. Joseph Woods
Dr. Joseph Woods
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Dr. Ed Friedlander
Pathology
In brief: ~2-7%
This would be high for anyone else, but it's usual for new babies who are making lots of new red blood cells for rapidly-growing bodies.
After a few weeks it drops to the grown-up's level of about 1%.

In brief: ~2-7%
This would be high for anyone else, but it's usual for new babies who are making lots of new red blood cells for rapidly-growing bodies.
After a few weeks it drops to the grown-up's level of about 1%.
Dr. Ed Friedlander
Dr. Ed Friedlander
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