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Free Practice Questions for Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker)

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Key Facts: Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker) Exam

2 tracks

Laboratory medicine or clinical physiology; you cannot register for both

Karolinska Institutet

4 cases

Laboratory medicine theory cases: clinical chemistry, microbiology, transfusion medicine/immunology, pathology

Karolinska Institutet

10 stations

OSPE stations of 15 minutes in the laboratory medicine practical test

Karolinska Institutet

5 / 3

Maximum attempts: five for the theoretical test, three for the practical test

Socialstyrelsen

SEK 990

Socialstyrelsen application fee for review of the foreign education (step 1)

Socialstyrelsen

Kunskapsprov för biomedicinska analytiker is run by Karolinska Institutet for Socialstyrelsen in two tracks. The laboratory medicine track has a case-based theoretical test (clinical chemistry, microbiology, transfusion medicine/immunology, pathology and a scientific text) and a practical OSPE plus an independent analysis; the clinical physiology track has a multiple-choice part, written cases with a seminar and a practical test. Up to five theoretical and three practical attempts are allowed within five years. The test is in Swedish; this 100-question bank is an English-language MCQ study adaptation — not an official translation, format simulation, or substitute for writing/speaking/performance practice.

Sample Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker) Practice Questions

Try these sample questions to review concepts for the Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker) exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In clinical spectrophotometry, a biomedical laboratory scientist notices that absorbance measurements for an enzymatic assay lose linearity at values exceeding 2.0 AU. According to the Beer-Lambert law (A = ε × b × c), what is the primary physical cause of this apparent negative deviation from linearity at high analyte concentrations?
A.Spontaneous degradation of the chromophore caused by ambient room temperature
B.Stray light reaching the photodetector and limitation of the detector's photometric dynamic range
C.An increase in the optical pathlength of the reaction cuvette at higher fluid densities
D.Complete exhaustion of atmospheric oxygen inside the enclosed spectrophotometer housing
Explanation: At high absorbance values (typically A > 2.0), transmitted light intensity is less than 1% of incident light, making stray light relatively prominent and causing the detector to register falsely high transmitted light, which produces an apparent negative deviation from linearity. Photodetectors also have finite dynamic ranges and cannot accurately differentiate extremely low transmittance signals from baseline noise. Dilution of the patient sample is standard laboratory procedure when absorbance exceeds the validated linear measuring range.
2A patient with severe hypertriglyceridemia (plasma triglycerides > 35 mmol/L) has a sodium result of 122 mmol/L measured by indirect ion-selective electrode (indirect ISE) on an automated chemistry platform. Direct ISE on a blood gas analyzer yields a sodium of 139 mmol/L. What mechanism explains this discrepancy?
A.Heparin-induced precipitation of sodium ions in the blood gas capillary tube
B.Binding of free sodium ions to circulating chylomicrons and VLDL particles
C.Pseudohyponatremia due to the electrolyte exclusion effect in indirect ISE methods
D.Ionophore poisoning in the direct ISE glass membrane caused by neutral lipids
Explanation: Indirect ISE requires a pre-measurement dilution step that assumes serum/plasma is approximately 93% water and 7% non-aqueous phase (lipids and proteins). In severe hyperlipidemia or paraproteinemia, the non-aqueous fraction expands substantially, causing the pre-dilution volume calculation to underestimate the actual electrolyte concentration in the aqueous phase (pseudohyponatremia). Direct ISE measures ion activity directly in undiluted whole blood or plasma and is free from the electrolyte exclusion effect.
3In standardized IFCC reference methods for measuring serum enzyme activities (such as ALT and AST at 37 °C), the assay reaction mixture is formulated so that the substrate concentration [S] is much greater than the Michaelis constant (Km). Which kinetic condition is established by this formulation?
A.Equilibrium displacement kinetics, where coenzyme conversion occurs only after complete depletion of serum inhibitors
B.First-order kinetics with respect to substrate, where reaction rate depends primarily on patient substrate concentration
C.Second-order non-enzymatic degradation, where reaction velocity decreases exponentially throughout the incubation period
D.Zero-order kinetics with respect to substrate, where reaction velocity is directly proportional to enzyme catalytic concentration
Explanation: When substrate concentration is maintained far in excess of the Michaelis constant ([S] >> Km, typically [S] ≥ 10–20 Km), the active sites of the enzyme are fully saturated, and the reaction proceeds at its maximum velocity (Vmax). Under these zero-order conditions with respect to substrate, the measured rate of product formation (or coenzyme consumption such as NADH oxidation at 340 nm) is directly proportional to the catalytic concentration of the enzyme in the specimen.
4A routine serum biochemistry profile shows S-Kalium of 8.9 mmol/L and S-Kalcium of 0.45 mmol/L in an outpatient without severe symptoms or ECG changes. The laboratory scientist suspects a preanalytical collection error. Which sampling mistake is most consistent with these findings?
A.Using a sodium citrate coagulation tube before the serum tube
B.Drawing an EDTA tube immediately prior to filling the serum separator tube without proper flushing
C.Allowing the blood specimen to sit on an ice slurry for 15 minutes before centrifugation
D.Using a 21-gauge needle instead of a 23-gauge butterfly collection set
Explanation: K2-EDTA or K3-EDTA anticoagulants contain high concentrations of potassium salt and act by chelating divalent cations, particularly calcium and magnesium. If blood from an EDTA tube contaminates a subsequent serum or lithium-heparin tube (e.g., via syringe transfer or needle carryover), the result is marked artificial hyperkalemia accompanied by severe in vitro hypocalcemia and hypomagnesemia. The recommended order of draw prevents anticoagulant cross-contamination.
5An arterial blood gas (aB-Blodgaser) sample collected in a heparinized syringe arrives at the laboratory with a visible air bubble occupying approximately 10% of the syringe volume. How will this preanalytical error affect the measured parameters if the bubble remained in contact with the blood for 20 minutes?
A.Artificially increased pO2, decreased pCO2, and increased pH
B.Artificially decreased pO2, increased pCO2, and decreased pH
C.Markedly increased pCO2, increased potassium, and decreased sodium
D.No measurable change because blood hemoglobin buffers dissolved atmospheric gases completely
Explanation: Room air contains a high partial pressure of oxygen (~21 kPa / 150 mmHg) and virtually zero carbon dioxide (~0.04 kPa / 0.3 mmHg). When blood equilibrates with an ambient air bubble, oxygen diffuses into the sample (raising pO2 toward room air levels) and carbon dioxide diffuses out of the sample (lowering pCO2). The loss of carbonic acid causes a corresponding increase in measured pH. Syringes must be immediately de-bubbled and sealed upon collection.
6A 68-year-old bedridden patient with severe sarcopenia following bilateral leg amputations has a normal S-Kreatinin of 55 µmol/L, but the clinician suspects significant renal impairment. Why is S-Cystatin C superior to S-Kreatinin for estimating glomerular filtration rate (eGFR) in this patient?
A.Cystatin C is unaffected by acute inflammation, corticosteroid therapy, or thyroid dysfunction
B.Cystatin C undergoes extensive tubular secretion in the proximal tubule, compensating for decreased glomerular filtration
C.Cystatin C is produced by all nucleated cells at a constant rate and its production is independent of muscle mass
D.Cystatin C is eliminated entirely by biliary excretion when glomerular filtration drops below 30 mL/min
Explanation: Serum creatinine is generated from non-enzymatic conversion of creatine in skeletal muscle, making its baseline production heavily dependent on muscle mass. In amputees or severely sarcopenic patients, creatinine generation is drastically reduced, masking severe reductions in GFR. In contrast, Cystatin C is a low-molecular-weight protein produced at a constant rate by all nucleated cells, freely filtered by the glomerulus, and almost completely reabsorbed and metabolized by proximal tubular cells, making eGFR-Cystatin C much more reliable in patients with abnormal muscle mass.
7During the daily internal quality control (IQC) run for serum potassium, the control material measurement is 4.8 mmol/L. The established control mean is 4.0 mmol/L with a standard deviation (SD) of 0.2 mmol/L. According to multirule Shewhart-Westgard procedures, which rule is violated and what type of error does it primarily signify?
A.R_4s rule, indicating proportional bias that can be mathematically corrected by post-analytical software
B.1_2s rule, which is an immediate rejection rule indicating systematic instrument calibration failure
C.4_1s rule, indicating small random noise that permits immediate release of patient results
D.1_3s rule, indicating a random error or the start of a large systematic error requiring analytical run rejection
Explanation: The control value of 4.8 mmol/L is +4.0 SD above the established mean ((4.8 - 4.0) / 0.2 = +4.0 SD). This exceeds the 3 SD threshold (+3s limit is 4.6 mmol/L), triggering the 1_3s rule violation. In Westgard multirule QC, the 1_3s rule is a mandatory rejection rule that indicates random error (such as bubble, pipetting error, or electrical surge) or an acute large systematic error. Patient results from this analytical run must not be reported until troubleshooting and re-testing are complete.
8Two consecutive quality control runs for serum albumin on the same analytical module yield values of +2.2 SD and +2.4 SD above the target mean. Which Westgard multirule is violated, and what is the appropriate corrective action?
A.1_2s rule; accept the run and release patient results because neither measurement exceeded 3 SD
B.2_2s rule; reject the analytical run, inspect calibration and reagent lot stability for systematic bias
C.R_4s rule; perform an immediate instrument bleach decontamination cycle for random noise
D.10_x rule; accept the run because fewer than ten points have deviated in the positive direction
Explanation: The 2_2s rule is violated when two consecutive control observations (either across two different control levels in the same run or across two consecutive runs of the same control) exceed the mean by +2 SD or both exceed by -2 SD in the same direction. This rule is highly sensitive to systematic error (calibration drift, expired calibrator, or aging reagent). The analytical run must be rejected and corrective action (recalibration, checking reagent blank) taken before patient samples can be measured.
9A 16-year-old adolescent undergoing investigation for mild joint pain has a marked elevation of serum alkaline phosphatase (S-ALP: 5.8 µkat/L, adult reference < 1.8 µkat/L). Serum gamma-glutamyltransferase (S-GT), alanine aminotransferase (S-ALAT), and total bilirubin are all completely normal. What is the most plausible physiological explanation?
A.Physiological osteoblastic bone remodeling associated with the pubertal growth spurt
B.Early stage primary biliary cholangitis without cholestatic enzyme induction
C.Occult hepatic steatosis with isolated canalicular membrane shedding
D.Placental ALP isoform synthesis secondary to subclinical microchimerism
Explanation: Serum ALP consists of several tissue-specific isoenzymes, primarily from liver and bone (as well as intestinal and placental isoforms). During childhood and pubertal growth spurts, osteoblastic activity in growing bones is high, leading to physiological elevations of the bone ALP isoenzyme that can reach 2 to 3 times adult reference intervals. Because gamma-glutamyltransferase (S-GT) is synthesized by biliary epithelium but not by bone, a normal S-GT confirms that the ALP elevation is of osseous, not hepatobiliary, origin.
10A routine serum sample shows a moderate in vitro hemolysis index (H-index corresponding to free hemoglobin of ~2.5 g/L). Which set of clinical chemistry analytes will be falsely elevated primarily due to the release of high intracellular erythrocyte contents?
A.Albumin, calcium, and thyroid-stimulating hormone (TSH)
B.Sodium (Na), alkaline phosphatase (ALP), and urea
C.Potassium, lactate dehydrogenase (LD) and AST
D.Total cholesterol, triglycerides, and C-reactive protein (CRP)
Explanation: Human erythrocytes contain intracellular concentrations of potassium (~105 mmol/L vs. ~4 mmol/L in plasma), lactate dehydrogenase (LD ~160 times higher than serum), and aspartate aminotransferase (AST ~40 times higher than serum). When red blood cells lyse in vitro during phlebotomy, transit, or delayed separation, these intracellular analytes leak into the serum, causing marked false elevations. Automated analyzers use spectrophotometric serum indices (H, I, L) to detect and flag these interferences.

About the Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker) Exam

Kunskapsprov för biomedicinska analytiker is Socialstyrelsen's knowledge test for biomedical laboratory scientists educated abroad who want a Swedish licence. Karolinska Institutet runs it in two tracks, laboratory medicine and clinical physiology, each with a theoretical and a practical test. This page offers independent English-language practice, focused mainly on the laboratory medicine knowledge areas.

Exam sponsor: Karolinska Institutet on behalf of Socialstyrelsen (National Board of Health and Welfare). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Two tracks; candidates take the one matching their education. Laboratory medicine: theoretical test (four patient cases in clinical chemistry, microbiology, transfusion medicine/immunology and pathology, plus a scientific text) and a practical test (10-station OSPE plus an independently performed analysis). Clinical physiology: multiple-choice part in three subject areas, four written patient cases with an oral seminar, and a practical test.

Time Limit

Laboratory medicine theoretical test: one day; practical test in two parts (timings sent to registered candidates)

Passing Score

Not published as a percentage; each part must be passed

Exam / Certification Fees

No examination fee published (SEK 990 Socialstyrelsen application fee for the earlier education review)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

One of the four laboratory medicine cases; 25 practice questions

Clinical chemistry

Photometry, electrolytes, blood gases, enzymes, proteins, immunoassays, chromatography, preanalytics and quality control.

One of the four laboratory medicine cases; 20 practice questions

Clinical microbiology and molecular diagnostics

Identification, EUCAST susceptibility testing, resistance, serology, PCR, sequencing and biosafety.

One of the four laboratory medicine cases; 20 practice questions

Transfusion medicine and clinical immunology

Blood grouping, antibody screening, crossmatching, blood components, transfusion reactions and immunodiagnostics.

15 practice questions

Haematology and haemostasis

Cell counting, smear morphology, anaemia and leukaemia diagnostics and coagulation testing.

Pathology is one of the four laboratory medicine cases; 20 practice questions

Pathology, clinical physiology, quality and regulations

Histological technique and staining, immunohistochemistry, basic ECG and spirometry, ISO 15189 and Swedish regulations.

Preparing for the Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker) Exam

What You Need to Know

  • Passing score: Not published as a percentage; each part must be passed
  • Assessment: Two tracks; candidates take the one matching their education. Laboratory medicine: theoretical test (four patient cases in clinical chemistry, microbiology, transfusion medicine/immunology and pathology, plus a scientific text) and a practical test (10-station OSPE plus an independently performed analysis). Clinical physiology: multiple-choice part in three subject areas, four written patient cases with an oral seminar, and a practical test.
  • Time limit: Laboratory medicine theoretical test: one day; practical test in two parts (timings sent to registered candidates)
  • Exam / certification fees: No examination fee published (SEK 990 Socialstyrelsen application fee for the earlier education review) Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Sweden Biomedical Laboratory Scientist Knowledge Test (Kunskapsprov för biomedicinska analytiker): Suggested Study Strategy

1Read the information booklet and example tests that Karolinska Institutet publishes for your track.
2For laboratory medicine, practise reasoning through patient cases: what to analyse, which method, what can go wrong before and during analysis, and how to interpret the result.
3Know the Swedish laboratory context: EUCAST breakpoints, bastest and MG-test, PK(INR) by Owren's method, and external quality assessment through Equalis.
4Practise the practical skills in the OSPE list, such as sampling, microscopy, dilution and solution calculations, and quality control decisions.
5Practise writing short technical answers in Swedish, since the official test is answered in Swedish.

Frequently Asked Questions

Which track should I take?

Karolinska Institutet runs separate tests for the laboratory medicine track (laboratoriemedicin) and the clinical physiology track (klinisk fysiologi). You choose the track that matches your education, and you cannot register for both.

How is the laboratory medicine test structured?

The theoretical test is digital and has two parts: four patient cases in clinical chemistry, clinical microbiology, transfusion medicine/immunology and pathology, published in advance, with questions on methods and medical and biological aspects; and a scientific text with questions. The practical test has an OSPE with ten 15-minute stations and a part in which you perform and evaluate an analysis from a written method.

How is the clinical physiology test structured?

The theoretical test starts with multiple-choice questions in three subject areas (examination technique and quality, basic medicine, and clinical physiology methods), each of which must be passed, followed by four written patient cases and an oral seminar. A practical test follows. This bank covers only a small part of the clinical physiology content.

How many attempts do I get?

Socialstyrelsen allows five attempts at the theoretical test and three at the practical test, and the whole test must be passed within five years of your first sitting. If you do not cancel before the test starts, the attempt counts as used.

Is the test available in English?

No. The test is in Swedish. This bank is an English-language multiple-choice study adaptation: it helps you review the knowledge areas but is not an official translation, and it cannot simulate the case answers, the seminar or the practical test.