Doctor insights on:
Blood Test Package
Can pregnancy blood test give false negative. 3 days late, urine test negative and blood test negative too?
Urine pregnancy test positive one week with blood hCG of 1 and the next week urine pregnancy test negative?
My metanephrine free urine was 51, blood test was 63, normetanephrine free urine 181, blood test 150- total urine 232, blood test 213. Normal?
Sounds normal if....: the upper limits for blood metanephrine and normetanephrine are 0.50nm/l and 0.90nm/l. Urinary levels are, respectively: Total 24 hr. metanephrine =1.3mg for urine; and total plasma ME+NME is less than 205pg/ml. It sound as though you're within the normal ranges, but depending on the units of measure, which vary from lab to lab and med ctr to med ctr., you may not. Meet w/ your endocrinologist. ...Read more
Took 3 pregnancy test. All positive. After urine, red blood and some blood clots. Took another test after, still positive. Please help. First pregnant?
Can a blood pregnant test show up positive before a urine pregnant test? How early can the blood test show positive?
If bag for babies urine sample was contaminated can high level of white blood cell test be false?Also second bag for culture make test false neg?
No bags!!: If there is a significant concern for a urine infection in a baby, a bag specimen should never be used. It's akin to pooping on an area before a culture is collected instead of a nice sterile clean sight. The baby should be catheterized with a tiny feeding tube or small cath tube and a truly clean specimen obtained. So many false positives from dirty specimens and then unclear results. ...Read more
Yes you can: Many times if there is no urine, your physician or nurse may use your blood for this test. The test is based on color reaction towards the HCG and will tell you positive with a line when the chemical is indeed present. A laboratory run test can then be used to confirm the test if needed. ...Read more
Probably "not": A blood betaHCG of < 1mIU/ml is usually considered to be a negative pregnancy test particularly if your period is delayed by 10 to 14 days and the test is performed by a reliable lab....Therefore you are probably not pregnant. Keep in mind that any test can be wrong or inaccurate; fortunately there are very few very rare cases of "false negative blood pregnancy tests." You may want to repeat it. ...Read moreSee 1 more doctor answer
My blood test for hCG came at <1 but urine test this morning was positive. Is the blood test wrong? What does that mean?
Faint positive hpt w/ first morn urine, neg dr. Urine test later that day, blood test came back post. Why was drs urine test neg? Early testing?
Pregnancy tests: Blood tests are more sensitive than urine tests, especially in early pregnancy. First morning urine is usually more concentrated than urine produced later in the day. Eating and drinking can dilute the urine enough to cause a false-negative result. That is why the blood test is done for confirmation. ...Read moreSee 2 more doctor answers