Urine Pregnancy Test

From Anvita Health Wiki

Contents 1 Indications 2 Methods 3 Procedure 4 Notes 5 More General Terms 6 References

Indications

• pregnancy

Methods

• high-sensitivity urine pregnancy tests include: [3]

• LifeSign1, One Step dBest, First Response Early Result

• RIA for urine hCG has a sensitivity of 0.01 ng/mL (0.13 mIU/mL), 1-2 orders of magnitude more sensitive than the home pregnancy test
• RIA detects 90% of pregnancies (> 0.015 ng/mL) by the 1st day of the missed menstrual period & 97% after 1 week

Procedure

• use 1st morning urine; it is highest in hcG [3]
• allow 10 minutes before reading the test [2]
• retesting in a few days may improve sensitivity [3]

Notes

• most home pregnancy tests claim detection limits for hCG of 15-100 mIU/mL [1]
• many false negatives are likely when the test is performed on the 1st day of the missed period

More General Terms

• pregnancy test
• point of care test

References

1. Journal Watch 21(22):179, 2001 Wilcox et al JAMA 286:1759, 2001
2. Journal Watch 24(6):51, 2004 Cole LA et al, J Obstet Gynecol 190:100, 2004 PMID: [1]
3. Home Pregnancy Test Kits Prescriber's Letter 11(4):23 2004 Detail-Document#: [2] (subscription needed) [3]

urine pregnancy test (choriogonadotropin [Presence] in urine)