Pregnancy Testing

The biochemical diagnosis of pregnancy may be made very early with the use of qualitative serum bhCG tests of blood and urine. Modern tests can detect serum bhCG levels of 20 mIU/mL or lower in urine and can diagnose pregnancy within 7 to 10 days after conception, at 3 weeks of gestational age. Gestational age is measured from the first day of the last menstrual period. Quantitative serum bhCG levels correlate with the gestational age of the normal pregnancy. At any given gestational age, serum bhCG titers are markedly higher when twins (or multiple gestations) are present. Table.109-1 indicates the approximate gestational age at which different sonographic and serum markers appear in early pregnancy.7 The standards shown in the table are those of the International Reference Preparation (IRP). Some institutions may use an older standard called the Second International Standard, with values approximately one-half of the IRP values.

Gvatod Triniflbimnd Trnuram 5 BfcCC Lr.d

¿ga_landnorij Iramak] W_

jKtkd i^uikti ui CnuioHluc W-3U

~ yrttc VK »-Jtjnfcljt. hIUtL

tub. Tfdkst^d Veil in ud fnL iijOWiJjMU

M pfl'jf frii-Arr nlU^L

W- tfcffttUiiPol Ri^tEH? Ptrpisi!

Was this article helpful?

0 0
Spiritual Weight Loss Mentality

Spiritual Weight Loss Mentality

Awesome Ways To Get Over Your Mentality That Keeps you Overweight! This Book Is One Of The Most Valuable Resources In The World When It Comes To Results In Your Slim-down and Health Efforts! Day in day out we keep ourselves absorbed with those matters that matter the most to us. A lot of times, it might be just to survive and bring in some money. In doing so we at times disregard or forget about the extra matters that are essential to balance our lives. They’re even more essential to supply real meaning to our world. You have to pay attention to your wellness.

Get My Free Ebook


Post a comment