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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Should I Repeat A Pregnancy Test?

Hi

I checked in the Strip Positive for Pregnancy. I checked the blood - Beta HCG count and it was arnd 262. I tested in another lab which was using Beckman Coulter access method and had some count difference. Is this ok? Should i have to test again?
Mon, 14 Apr 2014
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OBGYN,  's  Response
Hi and welcome,

Beta HCG may show slight variation if tested in different labs. Also if it is tested at different times [ meaning that you give a sample now in one lab and 6-8 hours later in another lab], the HCG level will have increased in your body in 6 hours as the baby is growing and HCG is constantly produced in increasing amounts. So the level will be different.

Please compare results of one lab only as others may not necessarily be comparable due to difference in estimation methods and reference ranges.

Hope this satisfies your query.
Thanks for using HCM.     
Feel free to ask any more questions that you may have.
Dr Madhuri Bagde
Consultant Obstetrician and Gynecologist
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Should I Repeat A Pregnancy Test?

Hi and welcome, Beta HCG may show slight variation if tested in different labs. Also if it is tested at different times [ meaning that you give a sample now in one lab and 6-8 hours later in another lab], the HCG level will have increased in your body in 6 hours as the baby is growing and HCG is constantly produced in increasing amounts. So the level will be different. Please compare results of one lab only as others may not necessarily be comparable due to difference in estimation methods and reference ranges. Hope this satisfies your query. Thanks for using HCM. Feel free to ask any more questions that you may have. Dr Madhuri Bagde Consultant Obstetrician and Gynecologist