General Phlebotomy Certification Exam Tomorrow?
Short on time? This general phlebotomy certification exam review focuses on high-priority blood collection, tube, safety, specimen, and procedure concepts.
Phlebotomy certification exams differ by organization. This nationwide last-minute review focuses on concepts shared across major exams including NHA CPT, ASCP PBT, AMT RPT, and NCCT NCPT.
What General Phlebotomy Certification Exams have in Common
The certification organizations use different exam formats and weight topics differently, but their official exam outlines repeatedly emphasize the same core skills. If your exam is tomorrow, these are the areas worth reviewing first.
Blood Collection & Venipuncture
Know equipment selection, venipuncture steps, site selection, vein selection, tourniquet use, needle insertion, order of draw, tube filling, specimen labeling, and completion of the blood draw.
Tubes, Additives & Order of Draw
Know common collection-tube colors, their additives, the specimens they produce, common uses, proper fill requirements, mixing requirements, and the correct order of draw.
Common tube colors
Patient Identification & Preparation
Review patient identification, matching orders and requisitions, fasting or timed requirements, patient communication, allergies, positioning, and special patient considerations.
Safety & Infection Control
Review hand hygiene, personal protective equipment, sharps safety, needlestick prevention, bloodborne-pathogen precautions, cleaning and disinfection, and appropriate specimen and sharps disposal.
Specimen Handling & Processing
Know labeling, specimen integrity, transport, storage, centrifugation, processing, temperature and light requirements, and common reasons a specimen may be unacceptable.
Complications & Special Collections
Review hematoma, syncope, lack of blood flow, nerve symptoms, bleeding, difficult draws, capillary collections, blood cultures, special populations, and appropriate responses when problems occur.
Phlebotomy Numbers Worth Remembering
30° or Less — Venipuncture Angle
Standard venipuncture guidance calls for entering the vein at an angle of approximately 30 degrees or less.
1 Minute — Tourniquet
Avoid prolonged tourniquet application. A commonly taught standard is to release the tourniquet within about one minute to reduce hemoconcentration and specimen distortion.
2 Patient Identifiers
Use two independent patient identifiers and match the patient to the collection order or requisition before collecting the specimen. Do not use room number as a patient identifier.
6 Major Steps — Standard Venous Order of Draw
Memorize the standard sequence:
1. Blood cultures
2. Light blue — sodium citrate
3. Serum tubes — red/gold or equivalent
4. Green — heparin
5. Lavender/pink — EDTA
6. Gray — fluoride/oxalate or another glycolytic inhibitor
Do not alter this order.
Order of Draw: Know This Cold
The order helps prevent additive carryover from contaminating later specimens.
1
1. BLOOD CULTURES
Additive/contents:
Culture media or appropriate blood-culture collection system
Purpose:
Microbiology / detection of bloodstream infection
2
2. LIGHT BLUE
Additive:
Sodium citrate
Common association:
Coagulation testing
Memory note:
Blue before serum and additive tubes.
3
3. RED / GOLD SERUM
Contents:
Serum tube, with or without clot activator and/or gel depending on tube type
Common association:
Chemistry, serology, and other serum testing
4
4. GREEN
Additive:
Heparin
Common association:
Plasma chemistry testing
5
5. LAVENDER / PINK
Additive:
EDTA
Common association:
Hematology and selected blood-bank testing
6
6. GRAY
Additive:
Fluoride/oxalate or other glycolytic inhibitor depending on tube type
Common association:
Glucose-related testing
Tube manufacturers and facilities may use additional tube types or local procedures. Follow the applicable laboratory protocol when working clinically.
Routine Venipuncture: Think in Sequence
1. Review the order and required patient preparation.
2. Identify the patient correctly.
3. Explain the procedure and position the patient safely.
4. Assemble and inspect equipment.
5. Apply the tourniquet and select an appropriate vein.
6. Clean the collection site and allow the antiseptic to dry.
7. Anchor the vein.
8. Insert the needle bevel-up at an appropriate angle.
9. Fill tubes in the correct order of draw.
10. Mix additive tubes appropriately according to manufacturer instructions.
11. Release the tourniquet before removing the needle.
12. Remove the needle and activate its safety device.
13. Apply pressure to the site.
14. Label specimens correctly in accordance with applicable procedure.
15. Check the patient and specimens before leaving.
When Something Goes Wrong
Hematoma
Stop the collection when appropriate, remove the needle, and apply pressure. Review causes such as the needle passing through the vein or inadequate pressure after collection.
Syncope
Recognize dizziness, pallor, sweating, nausea, or loss of consciousness. Protect the patient from injury and follow facility procedure.
No Blood Flow
Consider tube vacuum, needle position, vein collapse, or positioning problems. Avoid excessive probing.
Hemolysis
Prevent specimen damage by using appropriate technique, equipment, mixing, handling, and transport. Hemolysis can interfere with laboratory results.
Prolonged Bleeding
Maintain appropriate pressure and recognize patients who may have increased bleeding risk.
Sharp or Radiating Pain
Stop the collection if symptoms suggest possible nerve involvement and follow appropriate procedure.
Capillary Collection: Easy-to-Confuse Rules
Adults & Older Children
The side of the distal portion of a fingertip is a commonly used capillary puncture site.
Infants
The medial or lateral plantar heel is used for infant heel puncture. Avoid inappropriate areas of the heel.
Capillary Order Matters Too
Capillary collections use a different sequence from routine venous order of draw. Remember that specimens vulnerable to platelet clumping are collected early in the capillary sequence.
Protect the Specimen
Think preanalytical error. Many problems occur before the specimen ever reaches the analyzer.
- Correct patient
- Correct specimen
- Correct tube
- Correct fill
- Correct label
- Correct handling and transport
Phlebotomy Exam Tomorrow? Use Your Remaining Time Intelligently.
Step 1 — Master the Order of Draw
Memorize the sequence, colors, additives, and common tube uses.
Step 2 — Review Routine Blood Collection
Walk mentally through patient identification, preparation, venipuncture, labeling, and specimen handling in the correct order.
Step 3 — Review Safety and Complications
Focus on infection control, sharps safety, hematoma, syncope, hemolysis, failed draws, and special patient situations.
Step 4 — Final Fast Review
Use the Readyward Phlebotomy Cram Sheet immediately before your final study session to reinforce high-yield rules, numbers, tube colors, additives, and procedures.
Readyward is an independent study resource and is not affiliated with, endorsed by, or sponsored by NHA, ASCP, AMT, NCCT, CLSI, OSHA, or any certification, testing, regulatory, educational, or healthcare organization. Certification examinations differ in content, format, scoring, requirements, and policies and may change. Always consult the official examination provider and current official materials for the certification exam you are taking. Clinical procedures, tube products, laboratory protocols, and institutional requirements may vary; follow current applicable professional and facility procedures in clinical practice. Readyward materials are supplemental study resources and do not guarantee a passing examination score.
Phlebotomy Exam Tomorrow? Do One More Fast Review.
Review the highest-priority phlebotomy collection rules, tube colors, additives, safety concepts, numbers, and specimen-handling principles one more time before your exam.