Practice Test GeeksMLPAO - Medical Laboratory Professionals Association of Ontario Practice Test
← All MLPAO Flashcard Decks

MLPAO Medical Laboratory Calculations Flashcards

7 cards from real MLPAO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 MLPAO Medical Laboratory Calculations flashcards as text

  1. A patient's serum glucose is reported as 5.6 mmol/L. What is the equivalent value in mg/dL?

    Answer: 100.8 mg/dL

    To convert mmol/L to mg/dL for glucose, multiply by 18.016 (the molecular weight factor). 5.6 × 18.016 = 100.9 mg/dL ≈ 100.8 mg/dL.

  2. You need to prepare a 1:10 dilution of a patient serum sample. If the final volume required is 5 mL, how much serum do you need?

    Answer: 0.5 mL

    A 1:10 dilution means 1 part sample in 10 parts total. Serum needed = 5 mL ÷ 10 = 0.5 mL, with 4.5 mL diluent.

  3. A urine specific gravity reading is 1.025. Which of the following best describes this specimen?

    Answer: Concentrated urine with high solute content

    Specific gravity of 1.025 is at the high end of the normal range (1.001–1.030), indicating concentrated urine with high solute content, suggesting dehydration or ADH activity.

  4. A laboratory uses a control with a target value of 4.0 mmol/L and a standard deviation (SD) of 0.1 mmol/L. What is the 2-SD warning limit?

    Answer: 3.8–4.2 mmol/L

    The 2-SD warning limits are: mean ± 2SD = 4.0 ± 2(0.1) = 4.0 ± 0.2, giving a range of 3.8–4.2 mmol/L.

  5. A blood specimen collected in a plain red-top tube at 9:00 AM must be centrifuged within 30 minutes of collection. What is the latest acceptable centrifugation time?

    Answer: 9:30 AM

    Adding 30 minutes to the 9:00 AM collection time gives 9:30 AM as the deadline for centrifugation.

  6. A technologist performs a serial dilution starting with a 1:2 dilution, followed by three additional 1:2 dilutions. What is the final dilution factor of the last tube?

    Answer: 1:16

    Each 1:2 dilution doubles the dilution factor. After 4 sequential 1:2 dilutions: 2¹ × 2¹ × 2¹ × 2¹ = 2⁴ = 1:16.

  7. A urinalysis dipstick shows a glucose reading of 2+ and protein reading of trace. What should the technologist do next?

    Answer: Confirm with a microscopic examination and notify the physician if glucose is significantly elevated

    Abnormal dipstick findings (glucose 2+) require correlation with microscopy and clinical context. The physician should be alerted if findings are clinically significant.