Phlebotomy Practice Test: Free CCMA-Style Questions

What is the order of draw for phlebotomy?

Blood cultures first, then light blue (citrate), red or gold (serum), green (heparin), lavender (EDTA) and gray (fluoride and oxalate), following CLSI GP41. The order keeps one tube's additive from carrying over into the next.

The CLSI order of draw for evacuated tubes
Order	Tube	Additive	Common tests
1	Blood culture bottles or tubes	Broth (SPS)	Blood cultures
2	Light blue	Sodium citrate	PT/INR, aPTT and other coagulation tests
3	Red or gold (serum, with or without gel)	Clot activator or none	Chemistry panels, serology
4	Green	Heparin	Plasma chemistry, ammonia
5	Lavender (or pink)	EDTA	CBC, hemoglobin A1c, blood bank (pink)
6	Gray	Sodium fluoride and potassium oxalate	Glucose, lactate, blood alcohol

The reasons are worth knowing because the exam asks them. Cultures go first to stay sterile. Light blue goes before any additive tube because coagulation tests are thrown off by carryover. EDTA (lavender) goes late because it binds calcium and raises potassium in a chemistry sample; gray goes last because fluoride and oxalate ruin other tests.

With a butterfly set, a light blue tube drawn first needs a discard tube so the air in the tubing does not underfill it. Light blue tubes must be filled to the line to keep the 9-to-1 blood-to-citrate ratio.

CCMA-style question 1 · Order of draw
The orders are a CBC (lavender), a PT/INR (light blue) and a plasma chemistry panel (green). In what order are the tubes drawn?
1. ALavender, light blue, green
2. BLight blue, green, lavender
3. CGreen, light blue, lavender
4. DLight blue, lavender, green
Worked answer
B: Light blue, green, lavender. In the CLSI order of draw, light blue (citrate) comes before green (heparin), which comes before lavender (EDTA). That keeps EDTA and heparin from carrying over into the coagulation tube and EDTA out of the chemistry tube.
1. Order of draw: cultures, light blue, red/gold, green, lavender, gray.
2. Of these three: light blue, then green, then lavender.
3. EDTA (lavender) is drawn late because it ruins calcium-dependent tests.
The trap: Drawing lavender first because the CBC is the most common test. The order depends on additives, not on which test is ordered most.

Four phlebotomy drills

Eight full 150-question mocks and four drills for each area, with the order of draw asked in new combinations every time.

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What are the steps of a routine venipuncture?

Identify the patient with two identifiers, check the requisition and any fasting, assemble supplies, apply the tourniquet 3 to 4 inches above the site for no more than 1 minute, clean with 70% alcohol and let it dry, anchor the vein, insert bevel up at 15 to 30 degrees, fill tubes in order, release the tourniquet, withdraw, apply pressure, and label at the patient's side.

Identify the patient: ask them to state their full name and date of birth, and match the requisition.
Select the site: the median cubital vein first, then the cephalic; the basilic last, because it lies near the brachial artery and a nerve.
Tourniquet 3 to 4 inches above the site, no longer than 1 minute; release and wait if you need longer to find a vein.
Clean with 70% isopropyl alcohol and let it air-dry, so it does not sting or hemolyze the sample.
Anchor the vein below the site, insert bevel up at 15 to 30 degrees, and fill the tubes in the order of draw, inverting each gently.
Release the tourniquet before you withdraw the needle, apply pressure with the arm straight, and activate the safety device.
Label every tube at the patient's side, before you leave the room.

Avoid an arm with an IV, a fistula or graft for dialysis, or the side of a mastectomy, and avoid scarred, bruised or swollen sites. Never draw above an IV.

What should you do if something goes wrong during a blood draw?

Stop the draw for a hematoma, nerve pain or fainting: release the tourniquet, remove the needle and apply pressure, then deal with the patient. Petechiae, hemolysis and hemoconcentration are specimen or site problems to recognize and prevent.

Common complications and the first action
Problem	What it looks like	First action
Hematoma	Fast swelling at the site	Tourniquet off, needle out, firm pressure
Nerve contact	Sharp, shooting or electric pain, tingling	Stop and remove the needle at once
Syncope (fainting)	Pale, sweaty, dizzy	Stop the draw, lower the head, keep the patient from falling
Petechiae	Tiny red spots below the tourniquet	Expect longer bleeding; apply pressure longer
Hemolysis	Pink or red serum or plasma	Prevent: let alcohol dry, invert gently, avoid tiny needles and hard shaking
Hemoconcentration	Falsely high cell and protein results	Prevent: tourniquet no longer than 1 minute, no fist pumping

CCMA-style question 1 · Complications
During a venipuncture, the skin around the needle starts to swell quickly. What should the medical assistant do?
1. APush the needle deeper into the vein
2. BRelease the tourniquet, remove the needle and apply pressure
3. CFinish filling the tubes, then apply ice
4. DAsk the patient to pump the fist
Worked answer
B: Release the tourniquet, remove the needle and apply pressure. Fast swelling is a hematoma forming: blood is leaking into the tissue. Stop the draw: release the tourniquet, withdraw the needle and press on the site, then document it and redraw at another site if needed.
1. Swelling at the site = a hematoma.
2. Stop: tourniquet off, needle out.
3. Firm pressure, then document.
The trap: Finishing the tubes first. A hematoma gets worse every second the needle stays in.

Which specimens need special handling?

Some tests change if the tube is not handled right: bilirubin is protected from light, ammonia goes on ice, cold agglutinins stay warm at body temperature, blood cultures need a sterile prep, and timed draws such as drug troughs must be drawn at the right time and labeled with it.

Protect from light: bilirubin, some vitamins. Wrap the tube in foil or use an amber tube.
Chill on ice: ammonia, lactate in some labs. Take to the lab at once.
Keep warm (37°C): cold agglutinins and cryoglobulins.
Blood cultures: a stronger antiseptic such as chlorhexidine, allowed to dry; fill the aerobic bottle first with a butterfly, because the tubing holds air.
Trough levels: just before the next dose. Peak levels: at the time after the dose that the order says.
Capillary collection: lavender (EDTA) first, to avoid platelet clumping; wipe away the first drop.

Is this the same as the phlebotomy technician exam?

No. This page covers phlebotomy as it appears on the CCMA exam, 12 of 150 scored items. NHA's Certified Phlebotomy Technician (CPT) exam is a separate, longer exam on phlebotomy alone, though the core facts here are the same.

If you are preparing for the CCMA, phlebotomy is a small share of the score but an essential job skill, and employers often check it in the interview. Practise this area in the free drill above, then take the full CCMA practice test to see it alongside the rest of the exam.

The other clinical areas are on the CCMA clinical patient care practice test and the EKG practice test. More worked questions are on CCMA sample questions.

Frequently asked questions

What is the order of draw?

Blood cultures, light blue, red or gold, green, lavender, gray, under CLSI GP41.

Which vein is the first choice?

The median cubital vein in the antecubital area. The basilic vein is the last choice.

How long can a tourniquet stay on?

No more than 1 minute. Longer causes hemoconcentration and can change test results.

Why is the first drop wiped away in a fingerstick?

It contains tissue fluid that can dilute the sample and change the result.

Are these real CCMA questions?

No. They are original CCMA-style questions written from CLSI and CDC guidance. LifeScore is not affiliated with NHA.

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