Order of Draw
Name that test
Laboratory Terminology
Additives
Non Blood Specimens
100

This tube, often with a red top, is drawn after coagulation tubes and may contain no additives or a clot activator.

What is a serum tube

100

This common blood test measures red blood cells, white blood cells, hemoglobin, hematocrit, and platelets.

What is a CBC (Complete Blood Count)

100

This term refers to the destruction of red blood cells, often caused by improper handling of blood specimens.

What is hemolysis

100

This anticoagulant, found in light blue top tubes, is used for coagulation studies like PT and aPTT.

What is sodium citrate

100

This type of urine collection is preferred for a culture and sensitivity test to detect infections.

What is a clean-catch midstream urine sample

200

Tubes with this color and containing heparin are drawn after serum tubes.

What is a green top tube

200

This test evaluates how quickly blood clots and is often monitored for patients on anticoagulant therapy.

What is a PT (Prothrombin Time)

200

The term for a blood sample that contains both serum and clotted cells after centrifugation

What is a serum specimen

200

The lavender or purple top tube contains this additive to prevent clotting by binding calcium.

What is EDTA 

200

A patient has a positive fecal occult blood test, what does that mean?

what is positive blood in stool.

Could indicate cancer, IBS, GI bleed.

300

In the order of draw, this tube comes immediately before the gray tube.

What is the lavender (or purple) top tube

300

This blood test helps detect infection or inflammation by measuring the speed red blood cells settle at the bottom of a test tube.

What is an ESR (Erythrocyte Sedimentation Rate

300

This word describes when a sample contains an abnormal amount of fat, giving the plasma or serum a milky appearance.

What is lipemia

300

This additive is found in green top tubes and prevents clotting by inhibiting thrombin and thromboplastin.

What is heparin

300

This body fluid, collected via lumbar puncture, must be delivered immediately to the lab.

(What is cerebrospinal fluid (CSF)

400

This is the primary reason why the correct order of draw must be followed during phlebotomy.

What is to prevent cross-contamination of additives

400

This lab test identifies the presence of bacteria in the blood and helps determine the best antibiotic treatment.

What is a blood culture

400

The term for the yellowish fluid portion of blood that remains after clotting has taken place.

What is serum

400

This tube, often identified by its gold or red/gray "tiger top," contains a gel for serum separation and sometimes a clot activator.

What is a serum separator (SST) with clot activator

400

This type of fluid is collected from a joint to check for gout or infection.

What is synovial fluid?

500

Put these tubes in the correct order of draw:
Green top, Light Blue top, Lavender top, Blood Culture bottles, Gray top, Red top.

What is: Blood Culture bottles → Light Blue top → Red top → Green top → Lavender top → Gray top

500

This test measures the average blood sugar levels over the past 2 to 3 months.

What is an A1C (Hemoglobin A1C)

500

This term refers to a blood culture result that shows bacteria in the blood, a potentially life-threatening condition.

What is bacteremia

500

This gray top tube contains two additives: one to prevent glycolysis and another to anticoagulate the blood.

What are sodium fluoride and potassium oxalate

500

Urine must be analyzed within this amount of time after collection or refrigerated

What is 2 hours