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Human Chorionic Gonadotropin for Pregnancy, Urine < 18 year old
|Performed by||Parnassus, Mission Bay & Mt. Zion Hematology|
|In House Availability||Test available 24 hours per day 7 days per week|
|Method||QuickVue One Step HCG Combo Test|
|Collection Instructions||Urine specimens may be collected in any clean, dry, plastic or glass container.
Specimens collected at any time may be used, however, the first morning urine generally contains the highest hCG concentration and is the best sample.
|Container type||Urine cup preferred but urine may be collected in any clean, dry, plastic or glass container|
|Amount to Collect||10 mL urine|
|Sample type||Random urine (First morning void preferred)|
|Preferred volume||10 mL urine|
|Min. Volume||1 mL urine|
|Normal range||Negative (non-pregnant)|
|Synonyms||HCG; Beta-HCG; b-HCG; gonadotropin tests Choriogonadotropin; UCG; urine pregnancy test; dipstick pregnancy test|
|Stability||Refrigerated 2 days, frozen 1 month.|
|Turn around times||STAT 2 hour, Routine 4 hours|
|Additional information||This is the only test routinely covered by MediCal in the absence of a demonstrated ectopic pregnancy, choriocarcinoma or hydatidiform mole.
A number of conditions other than pregnancy, including trophoblastic disease and certain nontrophoblastic neoplasms, cause elevated levels of hCG. These diagnoses should be considered if appropriate to the clinical evidence.
If a urine specimen is too diluted (low specific gravity), it may not contain representative levels of hCG. If pregnancy is suspected, ask the patient to collect first morning urine 48 to 72 hours later and repeat the test.
Because of the high sensitivity of the assay, specimens tested as positive during the initial days after conception may later be negative due to natural termination of the pregnancy.
A definitive clinical diagnosis should not be based on the results of a single test but should be made by the physician after evaluation. Blood specimens may be sent to the Clinical Laboratories for confirmatory testing.
|LDT or Mod FDA?||No|
|Last Updated||1/27/2015 2:32 PM|