Five flagged values from a single composite annual panel, assigned for NU610 Unit 3 to repeat, investigate or leave alone, with the reasoning and next action stated beside each. Searches like "nu 610 unit 3 assignment example", "nu610 unit 3 sample" and "nu610 unit 3 example" land here.
Five Borderline Values, Three Categories: A Laboratory Interpretation Exercise for a 58-Year-Old Woman's Annual Panel
[Student Name]
Purdue University Global
NU610: NP III Clinical - Primary Care Focus
Unit 3 Laboratory Interpretation Exercise
[Instructor Name]
[Date]
The patient is composite; values, ranges and dates are bracketed, and reference ranges vary by laboratory.
Categories
Repeat: the value may be an artifact of the draw or the sample; draw it again before acting. Investigate: the value is probably real and has a cause worth finding; order the next test now. Leave alone: the value is real or likely real, has a plausible benign explanation and no symptoms; recheck at the next routine draw.
Case
[58]-year-old woman seen for an annual visit. Takes sertraline [50 mg] daily for [four] years and hydrochlorothiazide [25 mg] daily for [two] years. Feels well: no fatigue, confusion, thirst, bone pain, kidney stones, numbness or change in bowel habit. Drinks [two to three] glasses of wine a week. Blood drawn fasting at [08:30]; the laboratory marked the sample as mildly hemolyzed.
Table
Calcium [10.6 mg/dL], reference [8.6 to 10.3]. Category: investigate. Reasoning: albumin is normal at [4.1 g/dL], so the corrected value is essentially unchanged, and a thiazide can raise calcium modestly but can also unmask primary hyperparathyroidism. Next step: repeat calcium with a parathyroid hormone level drawn together, since a raised or inappropriately normal PTH beside a high calcium points to primary hyperparathyroidism (Insogna, 2018).
MCV [101 fL], reference [80 to 100], hemoglobin normal at [13.4 g/dL]. Category: investigate. Reasoning: macrocytosis without anemia still has causes worth finding, including B12 or folate deficiency, hypothyroidism, liver disease and alcohol use, and none of her medications is a common cause. Next step: B12, folate, TSH and a liver panel, with a more detailed alcohol history at the results visit.
Potassium [5.4 mmol/L], reference [3.5 to 5.1]. Category: repeat. Reasoning: the sample was hemolyzed, which releases potassium from red cells and can raise the measured value on its own; she takes no drug that raises potassium, and the thiazide tends to lower it. Next step: repeat with a careful draw, avoiding a tight tourniquet and fist clenching.
Sodium [134 mmol/L], reference [135 to 145]. Category: leave alone. Reasoning: both of her medications are recognized causes of mild hyponatremia, thiazides and selective serotonin reuptake inhibitors in particular (Liamis et al., 2008), she has no symptoms, and the value is barely below range. Next step: recheck at the next routine draw, and sooner if symptoms appear or a medication changes.
Fasting glucose [108 mg/dL], reference [70 to 99]. Category: investigate, as confirmation. Reasoning: a fasting value from 100 to 125 mg/dL falls in the prediabetes range, and diagnosis needs confirmation (American Diabetes Association Professional Practice Committee, 2025). Next step: an A1C, which can be added to the same draw.
Each row names only the fact that moved the interpretation: albumin for calcium, the hemolysis flag for potassium, the two medications for sodium.
Synthesis
Draw together, in [one week]: repeat calcium with PTH; repeat potassium with a careful technique; B12, folate, TSH and liver panel; A1C. One visit to the laboratory covers every next step.
Tell her now: most of the values are small changes that need a second look rather than a cause for worry; one repeat is because of how the blood was drawn; the calcium and the red cell size need a few more tests; and her sugar is slightly high, which may mean prediabetes. No medication changes today.
Hold until results: the question of stopping the thiazide. If PTH confirms primary hyperparathyroidism, the thiazide may be contributing to the calcium level and the choice of blood pressure medicine will be revisited. If the A1C confirms prediabetes, lifestyle counseling and a plan for yearly testing follow.
Review: results visit in [two weeks], booked before she leaves.
References
American Diabetes Association Professional Practice Committee. (2025). 2. Diagnosis and classification of diabetes: Standards of care in diabetes 2025. Diabetes Care, 48(Suppl. 1), S27-S49. https://doi.org/10.2337/dc25-S002
Insogna, K. L. (2018). Primary hyperparathyroidism. New England Journal of Medicine, 379(11), 1050-1059. https://doi.org/10.1056/NEJMcp1714213
Liamis, G., Milionis, H., & Elisaf, M. (2008). A review of drug-induced hyponatremia. American Journal of Kidney Diseases, 52(1), 144-153. https://doi.org/10.1053/j.ajkd.2008.03.004
How this NU610 Unit 3 example is structured
Three category definitions, one line each, head the exercise, so the grader knows what each label commits the writer to. Only what the values need appears in the case paragraph: medications, symptoms, and the circumstances of the draw. The table's columns read value, reference range, category, reasoning and next step. Rows are ordered by clinical consequence rather than by the order the laboratory printed them, so calcium comes first. Each reasoning cell is limited to what shifts the interpretation: albumin for calcium, the hemolysis flag for potassium, the two medications for sodium. The ADA Standards of Care, 2025 edition, is cited for the fasting glucose range that defines prediabetes. The synthesis turns the table into a sequence: which draws happen together, what the patient is told now, and when results return for review.
Get an NU610 Unit 3 example written to your instructions
Paste the Unit 3 panel your NU610 section supplied, plus whatever history came with it and the rubric. Your first interpretation exercise is free, arrives within 24-48h, and places every flagged value in a defined category, reasons from the medications and draw conditions in the case, and closes with one coordinated follow-up plan. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
NU610 Unit 3 questions, answered
How do I decide between repeating a value and investigating it?
Ask whether the number itself is in doubt. If the sample was hemolyzed or delayed, drawn nonfasting when fasting mattered, or barely outside range with no context, a repeat comes first. If the number is probably real and could have a cause worth finding, investigate. The exercise should say which question you asked of each value.
Can an out-of-range value simply be accepted?
Sometimes, when the deviation is small, the patient is well, and a known explanation such as a medication accounts for it. The write-up should give that explanation and a point at which the value will be looked at again. Acceptance without a written reason is where marks disappear, because a reader cannot tell a judgment from an oversight.
Should the exercise include a differential for each abnormal value?
A short one, focused on this patient. Two or three likely causes per value, tied to her history and medications, is usually enough. A textbook list of every cause of macrocytosis or hypercalcemia adds length without showing judgment, and graders tend to reward the reasoning that narrows the list over the list itself.