CCMA Study Guide
CCMA Order of Draw: Tube Colors, Additives, and Mnemonics
CCMA order of draw memory card: yellow to gray tube sequence, additives, tests, light-blue fill ratio, capillary differences, and exam traps.
By MedCertPrep Team · Updated August 4, 2026
This guide is a high-yield memory card for the venipuncture order of draw used in NHA CCMA phlebotomy questions. It covers tube color, additive, common tests, fill rules, and why wrong order ruins results. Pair it with CCMA normal lab values for interpreting out-of-range results, and drill scenarios in Clinical Patient Care. Capillary order differs and is covered below.
Official task language lives in the NHA CCMA Test Plan under Phlebotomy (determine order of draw, select supplies, handle specimens). Clinic brands and specialty tubes can vary. Learn the standard evacuated-tube sequence first.
What is the CCMA order of draw?
The standard venipuncture order of draw taught for CCMA prep is:
- Yellow / blood culture (SPS or culture media)
- Light blue (sodium citrate)
- Red / SST / gold (clot activator and/or gel separator)
- Green (heparin)
- Lavender / pink (EDTA)
- Gray (sodium fluoride and potassium oxalate)
Wrong order risks additive carryover and cross-contamination, which can make results false and specimens unacceptable.
What does each tube color contain and test?
| Order | Cap color | Additive | Common tests | Exam must-know |
|---|---|---|---|---|
| 1 | Yellow / blood culture | SPS or culture media | Blood cultures | Draw first. Sterile technique. Do not contaminate with later additives |
| 2 | Light blue | Sodium citrate | PT, PTT/aPTT, INR, coagulation | Must fill to the line for the 9:1 blood-to-additive ratio. Underfill skews coagulation results |
| 3 | Red / SST / gold | None or clot activator ± gel | Chemistry, serology, many serum tests | Serum tubes often need clotting time before spin (commonly taught about 30 minutes for some red tops). Follow kit/lab protocol |
| 4 | Green | Heparin | Stat chemistry, many electrolytes | Useful for rapid chemistry. Know heparin is the additive |
| 5 | Lavender / pink | EDTA | CBC, many hematology tests; pink often blood bank/type | EDTA binds calcium. Do not draw before light blue if both are ordered in venipuncture |
| 6 | Gray | Sodium fluoride + potassium oxalate | Glucose, lactate, alcohol (as ordered) | Fluoride helps limit glycolysis so glucose does not drop in the tube |
Pro Tip: If the stem asks why a coagulation result looks wrong after a difficult multi-tube draw, check whether light blue was drawn after lavender. EDTA carryover into citrate can wreck clotting tests.
What mnemonic should I use for order of draw?
A common CCMA study mnemonic:
Boy Blows Red Giants Like Graces
- Boy = Yellow / blood culture
- Blows = Light Blue
- Red = Red / SST / gold
- Giants = Green
- Like = Lavender (pink shares EDTA)
- Graces = Gray
Another widely taught line is Stop Light Red Stay Put Green Light Go mapped onto the same color sequence. Pick one mnemonic and drill it until you can write the six colors without looking.
Why does order of draw matter on the exam?
Additive carryover changes chemistry and coagulation values. Classic failure patterns:
- EDTA (lavender) before citrate (light blue): calcium binding effects distort coagulation
- Drawing gray or other additives out of sequence: glucose or electrolyte artifacts
- Skipping blood culture first when cultures are ordered: contamination risk
On stems, the correct answer is often the sequence, the additive name, or the first corrective action (redraw with correct order / notify lab per protocol), not diagnosing disease from a contaminated tube.
Is capillary order of draw the same?
No. Capillary (dermal) microcollection order is different because capillary blood clots quickly. A common teaching order is:
- EDTA microcollection (lavender) first when CBC-type tests are ordered
- Other additive tubes next
- Serum / non-additive tubes last
Do not blindly apply the venipuncture mnemonic to a fingerstick stem. Read whether the question says venipuncture or capillary.
How should I practice order of draw for the CCMA?
- Write the six venipuncture colors from memory daily for one week.
- Add additive + one test for each color.
- Drill "which tube first" and "why was this result invalid" stems in Clinical Patient Care.
- Cross-check abnormal K+, glucose, or INR interpretation with CCMA normal lab values.
- Use a mixed set on free CCMA practice.
Frequently Asked Questions
What is the correct order of draw for CCMA venipuncture?
Yellow/blood culture, light blue, red/SST/gold, green, lavender/pink, gray. Memorize colors and additives together.
Why must the light blue tube be filled completely?
Sodium citrate tubes require a correct blood-to-additive ratio (commonly taught as 9:1). Underfilling changes clotting times and can make PT/PTT/INR unreliable.
What additive is in a lavender top tube?
EDTA. It prevents clotting by binding calcium and is used for CBC and many hematology tests. Pink tops are also EDTA and are often linked to blood bank/type and screen workflows.
What tube is used for glucose preservation?
Gray top (sodium fluoride with potassium oxalate) is the classic glucose/lactate teaching tube because fluoride slows glycolysis.
Does SST come before or after green?
In the standard venipuncture sequence used for CCMA study, red/SST/gold comes before green heparin tubes.
Where can I see the official phlebotomy tasks?
In the NHA CCMA Detailed Test Plan under Clinical Patient Care, Phlebotomy. Confirm current details on NHA.
Start locking the sequence today
- Recite Boy Blows Red Giants Like Graces out loud, then write the six colors.
- Add one test and one additive under each color.
- Open Clinical Patient Care for phlebotomy stems.
- Review related cards: lab values, infection control, EKG leads.
- Keep your calendar on the CCMA study plan.
Order first. Additive second. Action third. That is how these stems pay out.
Practice what you just read
Use blueprint-aligned questions and timed mocks for CCMA to turn this guide into exam-day readiness.