Precision is validated by:

Reproducibility is termed:

A glucose determination has an absorbance of 0.30 for the standard and 0.20 for the unknown. The unknown’s value is:

The formula for the arithmetic mean is:

A tight cluster of results on a target illustrates:

How many mL of 0.25 N NaOH are needed to make 100 mL of 0.05 N NaOH?

How many grams of H2SO4H2​SO4​ (MW=98) are in 750 mL of 3N H2SO4H2​SO4​?

The index of precision is the:

80 g NaOH (MW=40) is how many moles?

Limit of detection (LoD) is best described as:

To prepare 100 mL of 5% sulfosalicylic acid from a 25% stock, the volume needed is:

Reliability of a test to detect disease is its:

A nanometer measures:

The formula for CV is:

The molarity of 18.7 g KCl (MW=74.5) in 500 mL water is:

The analytical measurement range (AMR) is verified to ensure:

The sodium content in 100 g NaCl (Na=23, Cl=35.5) is:

What glassware is used to prepare a standard solution from a stock standard?

Hemoglobin controls have a mean of 15.2 g/dL and SD of 0.20. The ±2 SD range is:

Standard solution concentration is commonly expressed in which unit?

A 1 mL serum + 4 mL water is a:

A laboratory technician performs a recovery experiment with the following results:
– Mixture 1: 0.9 mL patient serum + 0.1 mL water → 89 mEq/L result
– Mixture 2: 0.9 mL same serum + 0.1 mL 800 mEq/L standard → 161 mEq/L result
What percentage of the added standard was recovered by the testing method?

The formula for calculating dilutions is:

A correlation coefficient (r) of 0 indicates:

How many grams of NaCl are needed to prepare 1 L of 0.9% normal saline?

Limit of quantitation (LoQ) is the:

Agreement with the true value is:

Predictive value of a positive test is:

An automated CK assay gives a reading above the linearity limit. A 1 mL serum sample is diluted with 9 mL of water, and the instrument reads 350 U/L. What is the correct report for the undiluted serum?

How much stock solution is needed to prepare 8 mL of a 75% solution?

How many mL of 30% albumin are needed to make 6 mL of 10% albumin?
1 mL

A pH of 7.0 represents an H+H+ concentration of:

The statistical term for the average value is the:

For values (100, 120, 150, 140, 130), the mean is:

Given mean WBC = 12,450/μL and SD = 153.2/μL, the CV is:

The formula for gram equivalent weight (GEW) is:

A serum glucose sample diluted 1:5 (Dilution A) and further 1:2 (Dilution B) must be multiplied by:

A serum potassium (MW=39) value of 19.5 mg/100 mL equals:

How many mL of anti-D reagent are needed for 5 mL of a 1:25 dilution?

To prepare 25 mL of 3% acetic acid, the volume of glacial acetic acid needed is:

With ±2 SD as the error limit, how many of 100 control values fall outside?

How many mL of red blood cells are needed to make 25 mL of a 4% suspension?

The formula for molarity is:

Given: Absorbance = 0.500, light path = 1.0 cm, concentration = 0.2 mol/L. The molar absorptivity is:

For a cholesterol QC with mean = 137 mg/dL and SD = 3 mg/dL, the CV is:

How many mL of 3% solution can be made from 6 g solute?

To prepare 40 mL of a 3% solution, the volume of stock solution needed is:

The most frequent value in a dataset is the:

The middle value in a dataset is the:

Diagnostic specificity is the percentage of:

The normality of 280 g NaOH (MW=40) in 2000 mL solution is:

Adding 25 g NaOH (MW=40) to 0.5 L water, then diluting to 0.75 L, yields:

Which parameter varies with disease prevalence?

To make 1 L of 1.0 N NaOH from 1.025 N NaOH, the volume needed is:

A 600 mg/dL glucose solution diluted 1:30 has a final concentration of:

The ability to measure only the analyte of interest is:

A 0.25 mL sample diluted to 20 mL results in a dilution of:

A spinal fluid protein diluted 1:3 must be:

For a mean of 100 and SD of 1.8 mg/dL, the 95% confidence interval is:

The formula for moles of a chemical is:

A solution with 20 g solute in 0.5 L water is:

For sodium controls (140, 135, 138, 140, 142 mEq/L), the CV is:

If 0.5 mL of a 1:300 dilution contains 1 antigenic unit, 2 units would be in 0.5 mL of:

How many grams of sulfosalicylic acid (MW=254) are needed for 1 L of 3% (w/v) solution?

A solution with a precisely known concentration used to evaluate unknowns is a:

The formula for standard deviation is:

A 2% saline erythrocyte suspension contains how many mL of packed cells per 5 mL?

A 0.1 mL serum + 5 mL reagent + 4.9 mL water results in a serum dilution of:

The formula for % (w/v) solution is:

A 1 molal solution contains: