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The correct order of draw is:
2.Light blue top tubes
3.Serum (red top or red/gray tube)
6.Gray top tubes
BeCause = blood culture
Better = blue top
Specimens = red tops /red and gray
Generate = green top
Perfect = purple
Goals = Gray
Commont test for Lavender top tube
CBC,includes: RBC, WBC, platelet, hemoglobin, hematocrit, ESR (erythrocyte sed. rate) sickle cell screening.
Light blue top test
Coagulation studies -prothombin time (PT,TT,BT,FDP),(intrinsic path of coagulation.
Bleeding time (BT)
Measures the time required for cessation of bleeding after standardized capillary puncture; focuses on the number of platelets present and their ability to form a plug
Gray top tubes
Contain aditives and anti-coagulants (fasting blood sugar,glucose tolerance test) inverted 8 times
Inversion time of tubes
Lavender = 8 times
Light blue = 3 to 4 times
Green = 8 times
Gray = 8 times
Gray/red/tiger 5 times
Yelllow = 8 times
Red tubes (plain vacuum tube)
No additive or anti-coagulant (no need to invert the tube after collection- serum chemistry test, serology test, blood bank.
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