We have reserved the following test order with instructions 10 collect the specimens by capillary puncture.
SKILLS DRILLS
SKILLS DRILL 10-1: REQUISITION ACTIVITY Welcoming to the order of draw, list the name of the teat that will be collected in each tube, the stopper colons of the microtubes you will wse the additive(s) the tubes contain (ff any), and any special handing required for eace. specimen. Write “NA” if no special handing is required.
PATIENT HAFOPMATION
Name:
Instillation Number cstzerg9ts
Birth Date:
Feeling Physiatry Payne
Time to be Collected: STAT
Date to be Collected a51t27919
Special instructions: Contest by ciliary puncture only.
The Correct Answer and Explanation is :
It seems you’re working on a skills drill related to specimen collection and the proper handling of different blood tests using capillary puncture. Below is a structured approach to answering the question.
Test Order and Requisition:
Order of Draw for Capillary Puncture:
- First Tube (Microtainer) – Lavender stopper:
- Test Name: Complete Blood Count (CBC)
- Additive: EDTA (Ethylenediaminetetraacetic acid)
- Special Handling: None (NA)
- Second Tube – Green stopper:
- Test Name: Electrolytes Panel
- Additive: Heparin (for plasma collection)
- Special Handling: None (NA)
- Third Tube – Red stopper:
- Test Name: Serum chemistry (e.g., liver function tests)
- Additive: None (no additive)
- Special Handling: None (NA)
- Fourth Tube – Yellow stopper:
- Test Name: Blood Cultures (if necessary)
- Additive: Sodium polyanethole sulfonate (SPS)
- Special Handling: Transport to the lab immediately (NA)
- Fifth Tube – Blue stopper:
- Test Name: Coagulation Studies (e.g., PT/INR)
- Additive: Sodium citrate (anticoagulant)
- Special Handling: Ensure the tube is filled to the correct level to prevent errors in test results. (NA)
- Sixth Tube – Gray stopper:
- Test Name: Glucose or Lactic Acid Test
- Additive: Sodium fluoride and potassium oxalate
- Special Handling: Must be delivered immediately to the lab for testing. (NA)
Explanation (300 Words):
Capillary puncture is a common method for obtaining blood samples, particularly when venipuncture is not possible, such as in pediatric patients or when only a small volume of blood is needed. The order of draw is critical to prevent cross-contamination of additives that can affect test results.
The lavender tube containing EDTA is used first because EDTA is an anticoagulant and needs to be the first additive in the sequence. Afterward, the green tube is used for tests that require heparin, followed by the red tube, which contains no additive and can be used for serum tests. The yellow tube containing SPS is often used for blood cultures, while the blue tube is used for coagulation studies due to its sodium citrate content. The gray tube is used for glucose and lactic acid tests, containing potassium oxalate and sodium fluoride to prevent glycolysis.
Each tube needs to be handled according to its specific requirements to ensure accurate test results. For example, some tubes need to be filled to a specific level to avoid dilution errors, and others may require immediate transport to the laboratory. Proper order of draw, tube selection, and handling techniques are critical components of laboratory accuracy and patient safety.
Let me know if you’d like further clarification or additional details!