Clinical Chemistry Section Overview

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What is the primary purpose of internal quality control in a laboratory?

To evaluate the performance of laboratory tests over a long period of time
To compare the performance of different laboratory tests
To establish a Gaussian distribution of QC data
To monitor the day-to-day performance of laboratory tests (correct)

What is the recommended procedure for reconstituting lyophilized controls?

Mixing thoroughly with 10 mL of distilled water using a serological pipet
Reconstituting with 5 mL of distilled water using a volumetric pipet (correct)
Reconstituting with 10 mL of distilled water using a micropipet
Mixing gently with 5 mL of deionized water using a micro-pipet

What is the expected distribution of QC data when an analytical process is in control?

A bimodal distribution
A skewed distribution
A Gaussian distribution (correct)
A uniform distribution

What is the purpose of the Levey-Jennings chart in internal quality control?

To establish control limits for QC data (D) Signup and view all the answers

How long are frozen controls stable for?

15 days (C) Signup and view all the answers

How long are thawed controls stable for?

8 hours (D) Signup and view all the answers

What is the primary benefit of using multiple levels of controls in a laboratory setting?

To apply additional quality control rules that improve detection and interpretation of error (D) Signup and view all the answers

What is the frequency of applying two-level QCs in a laboratory that analyzes more than 100 samples per day?

At least once a day (D) Signup and view all the answers

What is the purpose of external quality control in a laboratory setting?

To ensure the reliability of laboratory test results through inter-laboratory comparisons (C) Signup and view all the answers

What is the frequency of running internal quality controls in RMC laboratory?

Every morning only (B) Signup and view all the answers

What is the percentage of results that fall within +/- 1 SD in a laboratory that applies two-level QCs?

51.7% (C) Signup and view all the answers

What is the name of the national reference laboratory for chemistry in the Philippines?

Lung Center of the Philippines (B) Signup and view all the answers

What is the primary purpose of quality control in the laboratory?

To detect and prevent analytic errors in analysis (B) Signup and view all the answers

Which of the following is NOT a type of body fluid tested in clinical chemistry?

Saliva (A) Signup and view all the answers

What is the primary function of a control product in quality control?

To provide a patient-like material for testing (C) Signup and view all the answers

Why is it important to test quality control samples frequently?

To ensure the instrument is operating within pre-defined specifications (C) Signup and view all the answers

What is the purpose of abnormal controls in quality control?

To monitor the instrument's performance at abnormal levels (D) Signup and view all the answers

What is the significance of quality control results in clinical chemistry?

They validate whether the instrument is operating within pre-defined specifications (C) Signup and view all the answers

What is the role of spectrophotometry in clinical chemistry?

To measure the interaction between light and a sample (B) Signup and view all the answers

What is the significance of clinical chemistry in healthcare?

It aids in the analysis of body fluids for diagnostic purposes (D) Signup and view all the answers

What is the purpose of the specimen preparation area in the clinical chemistry section?

To prepare patient samples for testing (A) Signup and view all the answers

What is the role of quality control in maintaining the instrument in the clinical chemistry section?

It ensures the instrument is operating within pre-defined specifications (B) Signup and view all the answers