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
Lavender top tube
Contain the (EDTA) inhibit coagulation by binding to calcium present in specimen.
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.
Test the ability of the blood to clot.
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
Thrombin time (TT)
Determines if adequate fibrinogen is present for normal coagulation.
Green top tubes
Chemistry test (ammonia, carboxihemoglobin,& stat electrolytes)
Gray top tubes
Contain aditives and anti-coagulants (fasting blood sugar,glucose tolerance test) inverted 8 times
Inverted 5 times (chemistry test) also called serum separator tube (SST)
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
Yellow tube (sterile)
(SPS) cultured for microorganism
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.
Laboratory test to detect the presence of antibodies, antigens, or immune substances
Radio graphic imaging of the blood vessels.
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