Urine hCG measurement is a qualitative test used as a urine pregnancy test.
Urine hCG testing is best performed at the point-of-care using one of many readily available test devices. It is rarely necessary to send samples to the laboratory for this test.
Serum hCG testing is a quantitative test that can be requested through the laboratory to confirm or exclude pregnancy.
Ambient (8 - 24 degrees Celsius)
If overnight - Chilled (2 - 8 degrees Celsius)
A positive test indicates that there is detectable hCG in the urine specimen, most likely to be due to pregnancy. Tests usually become positive when the hCG concentration reaches 25IU/L.
If there is a high clinical suspicion of pregnancy but the urine test is negative, either send a blood sample to the lab for serum hCG measurement or repeat the urine pregnancy test in 2-3 days.
False positive urine pregnancy tests are rare, but the result can be confirmed with serum hCG measurement. If the urine/serum hCG is measurable but there is no evidence of pregnancy, consider whether there is an alternative source of hCG production (for example, from an hCG-secreting tumour).
A positive result usually indicates urine hCG levels of >25 mIU/L
Lateral flow immunoassay (Innovacon)
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