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Blood pregnancy tests

A 25-year-old female asked:
Dr. Stephen Richards
41 years experience Obstetrics and Gynecology
Pretty quick: The hormone betaHCG is detectable within 5-7 days of implantation. So it can be positve before a missed period.
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A 25-year-old female asked:
Dr. Roy Arnold
46 years experience Internal Medicine
Yes: Serum measurement of HCG is very accurate in detecting pregnancy. Thanks for trusting HealthTap!
A 39-year-old female asked:
Dr. Karen Jones
36 years experience Obstetrics and Gynecology
Yes: Yes is correct! the blood test will turn positive at least several days earlier.
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A 25-year-old female asked:
Dr. Roy Arnold
46 years experience Internal Medicine
Yes: Serum measurement of HCG is very accurate in detecting pregnancy. Thanks for trusting HealthTap!
A 39-year-old female asked:
Dr. Alan Patterson
41 years experience Obstetrics and Gynecology
Because : Blood is more sensitive, blood detects down to 2-5 miu HCG urine can go down to about 25-30 miu and urine can be influenced by the concentration of t ... Read More
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A 34-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
Very accurate: Four weeks after the last intercourse, blood test would be positive if you were pregnant. At that stage you may also request an ultrasound examination ... Read More
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A 43-year-old female asked:
Dr. Jeff Livingston
21 years experience Obstetrics and Gynecology
irregular cycles: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring ... Read More
A 41-year-old female asked:
Dr. Carol Peters-tanksley
34 years experience Obstetrics and Gynecology
Very accurate: The pituitary adenoma will not decrease the accuracy of the blood pregnancy tests unless it is lh the adenoma is secreting, which is very rare. Most p ... Read More
A 39-year-old female asked:
Dr. Gurmukh Singh
48 years experience Pathology
Antibody to HCG: Antibodies to the beta chain of HCG are used to measure HCG in blood and urine. Blood levels of 5 units or higher are usually indicative of pregnancy.
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A 50-year-old member asked:
Dr. J Ricardo Loret De Mola
32 years experience Fertility Medicine
Phantom hCG: Several posibilities: 1) you are really pregnant and test is right 2) phantom HCG you have antibodies in you that cross react with the test turning ... Read More

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