8. Miscellaneous Testing Flashcards
pregnancy tests detect…
B-human chorionic gonadotropin
how long after implantation/conception does hCG show up in urine?
10 days after conception
2-3 days after implantation
ideal SG for urine pregnancy test
1.015
internal controls for pregnacy test
internal =: readable background
internal +: red control line
causes for + hCG
pregnancy
hCG injection
trophoblastic tumors
testicular tumors
GI neoplasms
2 types of trophoblastic tumors
hydatidiform mole
choriocarcinoma
causes for urine eosinophils
- acute interstitial nephritis
- Loeffler’s syndrome
- transplant rejection
- S. haematobium infection
requires 2 centrifuges
urine eosinophil stain
add a drop of ——- to help eosinophils withstand cytocentrifuge
albumin
how to quantify eosinophils
differential of 100 WBCs
principle of ammonium sulfate test
precipitates out larger hemoglobins and leaves myoglobins to filter through
then do another dipstick for blood
hemosiderin appears in urine after ——- becomes saturated with hemoglobin in the blood
haptoglobin
causes of hemosiderin
pernicious anemia
multiple transfusions
chronic hemolytic anemia
hemochromatosis
hamm test
stains hemosiderin granules black
2 parts of a gastroccult test
blood
pH
