Pass the Clinical Biochemical Genetics exam with confidence.
Start with a free CBG practice test and build exam-ready confidence for the Clinical Biochemical Genetics exam.
Practice expert-vetted questions, find your weak domains, and turn every mistake into a focused review plan.
Every question is reviewed by an experienced CBG professional for clarity, accuracy and practical exam relevance.
Domain analytics show which parts of the exam blueprint are holding you back.
Missed questions become a review list, so nervous guessing turns into focused repetition.
Track your readiness, domain strengths, and recent results at a glance.
Identify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
Start PracticingIdentify weak areas and improve with focused review.
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Straight answers about the CBG exam, the questions, pricing, the free trial, and how this fits your prep.
The CBG exam spans 15 domains - Amino acids (15%) — PKU and hyperphenylalaninemia; Tyrosinemias; Glycine encephalopathy/hyperglycinemia; MSUD and disorders of branched-chain amino acids; Homocystinuria/disorders of sulfur amino acids and re-methylation; Urea cycle defects; Other/Serine, Organic acids (12%) — Methylmalonic acidemia (excluding cobalamin defects) and propionic acidemia; 3-MCC deficiency and other C5OH-related disorders including 3-MCC deficiency and other C5OH-related disorders; IVA and other C5-related disorders; Glutaric acidemia type I; Disorders of ketone body metabolism (HMG-CoA lyase, SCOT); Other including Glutathione synthetase deficiency, ECHS1, and 3-methylglutaconic aciduria non-type 1, Cofactors (7%) — Cobalamin; Biotin; Molybdenum; Folate; Pyridoxine; Biopterin; Other including riboflavin, niacin, and thiamine, Carbohydrates (10%) — Glycogenoses (except GSD II [see LSD]); Disorders of glycolysis; Disorders of gluconeogenesis including fructose-1,6-bisphosphatase deficiency; Disorders of Galactose metabolism; Disorders of fructose metabolism; Congenital disorders of glycosylation; Other including pentose phosphate, Lipids (13%) — Fatty acid oxidation disorders including short-chain, medium-chain, long-chain, and multiple acyl-CoA dehydrogenase deficiency (GA2); Hyperlipidemias including Tangier disease and other; Disorders of cholesterol metabolism including Smith-Lemli-Opitz, Niemann-Pick C, and other bile acid disorders, Lysosomes (12%) — Mucopolysaccharidoses including Type I, Type II, Type III, Type IV, Type VI, and Type VII; Sphingolipidoses including Gaucher disease, Fabry disease, GM2 gangliosidoses including Tay-Sachs disease and variants and Sandhoff disease, Krabbe disease, Niemann Pick types A and B, GM1 gangliosidosis, and other; Multiple enzyme deficiencies including Mucolipidoses ML-II and ML-III, Multiple sulfatase deficiency, and other; Other including Pompe, Cystinosis, and NCL, Mitochondria (7%) — Mitochondrial myopathies with laboratory findings; Mitochondrial myopathies with Leigh syndrome; Mitochondrial myopathies with adult presentations; Disorders of electron transport chain function and assembly; Mitochondrial DNA mutation disorders; Disorders of mtDNA maintenance; Mitochondrial DNA depletion syndromes; Other including MELAS, Peroxisomes (3%) — Biogenesis disorders including Zellweger syndrome; Single-enzyme disorders including X-linked adrenoleukodystrophy; Other including Refsum - infantile, Purines and pyrimidines (3%) — Purine disorders including Lesch-Nyhan disease, Adenosine deaminase deficiency, and other; Pyrimidine disorders including UMP synthase deficiency and other, Transport (3%) — Dibasic aminoaciduria including cystinuria and lysinuric protein intolerance; Other amino acid transport disorders; Glucose; Carnitine; Other, Creatine (1%), Neurotransmitters (2%) — Succinic semialdehyde dehydrogenase (SSADH) deficiency; Disorders of dopamine synthesis; Other including GABA metabolism, Metals (3%) — Copper including Wilson disease, Menkes disease, and other; Iron; Zinc; Other, Laboratory (8%) — QA/QC; Artifact; Techniques; Regulations, and Other disease category (3%). Every practice question maps to one of them, so you train on exactly what's tested.
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the CBG exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
No. CBG Exam Prep is an independent study resource for Clinical Biochemical Genetics (CBG). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.
Every paid plan unlocks the full bank of 1,000+ practice questions covering all 15 CBG domains - Amino acids (15%) — PKU and hyperphenylalaninemia; Tyrosinemias; Glycine encephalopathy/hyperglycinemia; MSUD and disorders of branched-chain amino acids; Homocystinuria/disorders of sulfur amino acids and re-methylation; Urea cycle defects; Other/Serine, Organic acids (12%) — Methylmalonic acidemia (excluding cobalamin defects) and propionic acidemia; 3-MCC deficiency and other C5OH-related disorders including 3-MCC deficiency and other C5OH-related disorders; IVA and other C5-related disorders; Glutaric acidemia type I; Disorders of ketone body metabolism (HMG-CoA lyase, SCOT); Other including Glutathione synthetase deficiency, ECHS1, and 3-methylglutaconic aciduria non-type 1, Cofactors (7%) — Cobalamin; Biotin; Molybdenum; Folate; Pyridoxine; Biopterin; Other including riboflavin, niacin, and thiamine, Carbohydrates (10%) — Glycogenoses (except GSD II [see LSD]); Disorders of glycolysis; Disorders of gluconeogenesis including fructose-1,6-bisphosphatase deficiency; Disorders of Galactose metabolism; Disorders of fructose metabolism; Congenital disorders of glycosylation; Other including pentose phosphate, Lipids (13%) — Fatty acid oxidation disorders including short-chain, medium-chain, long-chain, and multiple acyl-CoA dehydrogenase deficiency (GA2); Hyperlipidemias including Tangier disease and other; Disorders of cholesterol metabolism including Smith-Lemli-Opitz, Niemann-Pick C, and other bile acid disorders, Lysosomes (12%) — Mucopolysaccharidoses including Type I, Type II, Type III, Type IV, Type VI, and Type VII; Sphingolipidoses including Gaucher disease, Fabry disease, GM2 gangliosidoses including Tay-Sachs disease and variants and Sandhoff disease, Krabbe disease, Niemann Pick types A and B, GM1 gangliosidosis, and other; Multiple enzyme deficiencies including Mucolipidoses ML-II and ML-III, Multiple sulfatase deficiency, and other; Other including Pompe, Cystinosis, and NCL, Mitochondria (7%) — Mitochondrial myopathies with laboratory findings; Mitochondrial myopathies with Leigh syndrome; Mitochondrial myopathies with adult presentations; Disorders of electron transport chain function and assembly; Mitochondrial DNA mutation disorders; Disorders of mtDNA maintenance; Mitochondrial DNA depletion syndromes; Other including MELAS, Peroxisomes (3%) — Biogenesis disorders including Zellweger syndrome; Single-enzyme disorders including X-linked adrenoleukodystrophy; Other including Refsum - infantile, Purines and pyrimidines (3%) — Purine disorders including Lesch-Nyhan disease, Adenosine deaminase deficiency, and other; Pyrimidine disorders including UMP synthase deficiency and other, Transport (3%) — Dibasic aminoaciduria including cystinuria and lysinuric protein intolerance; Other amino acid transport disorders; Glucose; Carnitine; Other, Creatine (1%), Neurotransmitters (2%) — Succinic semialdehyde dehydrogenase (SSADH) deficiency; Disorders of dopamine synthesis; Other including GABA metabolism, Metals (3%) — Copper including Wilson disease, Menkes disease, and other; Iron; Zinc; Other, Laboratory (8%) — QA/QC; Artifact; Techniques; Regulations, and Other disease category (3%). You can practice the whole bank, filter by domain, or run a timed, domain-balanced exam simulation.
Yes - the bank is maintained against the current exam outline, and questions are revised when the exam changes.
No honest practice platform can guarantee a pass. What realistic practice does is show you - before exam day - exactly which domains are weak, and give you the repetitions to fix them. That's the difference between hoping you're ready and knowing where you stand.
Yes. You get 10 free sample questions with instant feedback - no credit card and no account required.
The free sample shows you the question quality. Paid plans unlock the full 1,000+ question bank, exam-style practice modes, mistake review, and - on Fast Track and Pass Confidence - progress analytics that show your readiness by domain.
No. Every plan is a single one-time payment for a fixed access window - 48 hours, 7 days, or 6 weeks. There is no auto-renewal and no recurring billing.
Match it to your exam date: Final Review (2 days) for an exam in the next day or two, Fast Track (7 days) for an exam this week, Pass Confidence (6 weeks) for a structured run-up.
For most countries, the price you see is exactly what you pay - tax is already included. Where local law requires it to be added separately, it's shown clearly at checkout before you pay, so there are never any surprise fees.
Access is instant after payment and runs for your plan's full window from that moment. When the window ends, your local progress stays on your device - you can buy another window any time and pick up where you left off.
Yes - the whole platform is mobile-first: practice, mistake review, and analytics all work on any phone, tablet, or laptop with a browser. Nothing to install.
Every answer feeds your per-domain accuracy, readiness score, and weak-area list. Instead of re-reading everything, you drill the domains that are actually costing you points - that's what moves a score in days, not months.
Chat with us any time - the 24/7 support chat in the corner of every page gives instant answers about plans, access, and billing. Prefer email? The contact link is in the footer. Payments are processed securely by Stripe, and active customers can download an invoice from their profile page.
Make sure you're signed in with the same email you used at checkout - access activates within a minute of payment. If it still doesn't appear, email us from the contact link in the footer and it'll be sorted out.
Start your free 10-question practice test now and get instant results.
Unlock full-length timed mock exams and domain analytics to find and fix your weak spots before exam day.
Drill a single domain, run a mixed session, or sit a full timed exam simulation - pick the mode that fits your study window.
Jump straight in with a fast mixed session - perfect for a short study break.
Start quick practice →Drill the domain selected above and close the gaps where they matter most.
Practice this domain →A full-length timed exam that mirrors the real CBG test, balanced across every domain.
Start simulation →Flip, grade yourself, and repeat the tough ones until they stick.
Train with flashcards →Re-drill the questions you got wrong.
Review now →Drill your lowest-scoring domains first.
Find weak spots →The complete CBG question bank.
Browse all →Multiple-choice questions only.
Start →True/false questions only.
Start →Review your performance and keep improving
Flip a card, grade yourself honestly, and the deck keeps bringing back the ones you're still learning until they stick.
Pick based on how soon your exam is. Every plan includes exam-style questions, instant explanations, and one-time access.
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Keep billing details ready for receipts and confirm the access tied to your CBG prep account.
Invoice details are generated from your saved profile and current access plan.
Your exam date helps pace your prep. It is saved to your account and visible only to you.
Track your mastery across all CBG domains
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Real feedback from CBG candidates on Reddit.
"put off studying the organic acidemias section for weeks ngl, kept mixing up propionic and methylmalonic workups. the practice sets on clinicalbiochemicalexam.com finally made it stick. passed on my first try, still kinda surprised."
"honestly wasnt sure a question bank could help with something this niche but it did. mistake review after each block showed me i kept blanking on the same mito disorders, fixed that in the last two weeks before the exam."
"behind all through fellowship, barely studied until a month out. the mock exams gave me a realistic sense of pacing and the lysosomal storage questions actually resembled real ones. recieved my pass letter last week, relieved more than anything."