Professional & Trading
ASCP MLS Exam Prep — Planned cards + Free Mock
Planned 120-card ASCP MLS Anki (blood bank, chemistry, hematology, microbiology/immunology). 60Q / 90 min diagnostic live now (free 25-question version) — official BOC MLS is 100Q / 2h30 CAT / scaled 400. ≠ MLT.
Anki deck planned — free practice test is live now. Waitlist pings the founder in Telegram.
Coming soon
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This Anki deck is planned — not for sale yet. Take the free practice test now, then leave your email and we'll write when the deck launches (and ping the founder when demand is clear). Already have a strong bank for this exam? We accept partner Anki decks — QC, free mock from your bank, SEO/GEO publish, 70% net, payout from $100.
Exam version & sources
Medical Laboratory Scientist — MLS(ASCP) / MLS(ASCPi)— what this product is (and isn't)
- Exam version
- Current ASCP BOC MLS content guideline — verify at ascp.org (guideline PDF on BOC site)
- Official source
- ASCP BOC — Medical Laboratory Scientist (MLS)
- Last reviewed
- August 13, 2026
- What this covers
- Blood bank; Chemistry; Hematology & hemostasis; Microbiology & immunology
- Does not replace
- Independent study aid — it does not replace official ASCP Board of Certification (BOC) materials, practice exams, or required training.
Free practice test
Free ASCP MLS Practice Test 2026 | 25Q Free, 60Q Timed
ASCP MLS knowledge diagnostic — 60-question timed check (free 25-question version) with topic scoring and a readiness report before you buy the deck. It checks what you know; it is not a copy of the official exam format.
Take the free 25-question diagnosticSample cards
Fresh frozen plasma (FFP) is indicated primarily to:
Replace multiple clotting factors in coagulopathy when indicated
Pseudothrombocytopenia due to EDTA is suspected when:
Platelet clumps are seen on smear and count is higher in citrate tube
Which organism is an obligate intracellular bacterium causing atypical pneumonia, detected often by NAAT/serology rather than routine sputum culture?
Mycoplasma pneumoniae
Product facts
- Cards
- Planned
- Coverage
- Blood bank; Chemistry; Hematology & hemostasis; Microbiology & immunology
- Format
- .apkg
- Price
- Coming soon
- Checkout
- Waitlist
- Exam cycle
- Current exam cycle
- Delivery
- Digital download (planned)
Coverage by exam topic
| Topic | Exam weight | Cards |
|---|---|---|
| Blood bank | Diagnostic topic (equal mock share — not official domain weight) | Planned |
| Chemistry | Diagnostic topic (equal mock share — not official domain weight) | Planned |
| Hematology & hemostasis | Diagnostic topic (equal mock share — not official domain weight) | Planned |
| Microbiology & immunology | Diagnostic topic (equal mock share — not official domain weight) | Planned |
Exam facts
Medical Laboratory Scientist — MLS(ASCP) / MLS(ASCPi)
The ASCP Board of Certification Medical Laboratory Scientist exam, MLS(ASCP), certifies clinical laboratory scientists across blood bank, chemistry, hematology, microbiology, urinalysis, immunology, and laboratory operations. Official sittings are 100 computer-adaptive multiple-choice questions in 2 hours 30 minutes with a scaled passing score of 400 on a 100–999 scale. UniPrep2Go’s check is a shorter 60-question / 90-minute linear diagnostic (free 25-question version; not CAT). Independent prep — not ASCP BOC exam material. MLS is not MLT.
- Questions
- 100 multiple-choice, one best answer (computer adaptive)
- Time
- 2 hours 30 minutes
- Passing score
- Scaled 400 (no fixed percent correct)
- Scoring
- Scaled 100–999 (ASCP BOC CAT)
- Delivery
- Computer adaptive testing (CAT) via Pearson VUE — confirm when you book
- Administered by
- ASCP Board of Certification (BOC)
Knowledge domains and weights
| Domain | Official weight |
|---|---|
| Blood Banking | 17–22% official · UniPrep mock 25% (15 of 60) |
| Chemistry | 17–22% official · UniPrep mock 25% |
| Hematology | 17–22% official · UniPrep mock 25% |
| Microbiology | 17–22% official · UniPrep mock 25% (with immunology items) |
| Urinalysis and Other Body Fluids | 5–10% official (folded into UniPrep chemistry items) |
| Immunology | 5–10% official (folded into UniPrep micro/immuno items) |
| Laboratory Operations | 5–10% official (QC/safety folded into UniPrep topics) |
What changed in the current exam cycle
- National MLS(ASCP) remains 100 CAT items / 2 hours 30 minutes / scaled 400 — third-party mocks that use a percent pass are not the BOC scale.
- UniPrep’s check is 60 questions / 90 minutes / 70% diagnostic (free 25-question version) with four benches — not CAT and not 1:1 BOC percentages.
- MLT(ASCP) is a separate technician credential with the same sitting shape but a different guideline and eligibility path.
High-yield facts (commonly tested)
- Official MLS(ASCP): 100 CAT MCQ / 2h30 / scaled 400 (100–999). UniPrep check: 60Q / 90 min / 70% linear diagnostic (free 25-question version).
- Heaviest official areas: blood bank, chemistry, hematology, and microbiology (17–22% each); UA, immunology, and lab ops 5–10% each.
- MLS is scientist-level — ASCP MLT is a separate technician credential.
- Packed RBCs 1–6°C; platelets 20–24°C with agitation; do not report hemolyzed potassium as the patient’s K.
Common Medical Laboratory Scientist — MLS(ASCP) / MLS(ASCPi) questions
Straight answers to the questions candidates usually search before buying prep or booking the exam.
How many questions are on the ASCP MLS exam?
The national MLS(ASCP) exam is 100 computer-adaptive multiple-choice questions in 2 hours 30 minutes. The scaled passing score is 400 on a 100–999 scale. UniPrep’s check is a shorter 60-question / 90-minute linear diagnostic (free 25-question version).
Is UniPrep’s MLS check the official ASCP exam?
No. The 60-question check (free 25-question version) is independent practice. The matching Anki deck is planned (waitlist). Not ASCP BOC material.
Is MLS the same as MLT?
No. MLS(ASCP) is the medical laboratory scientist credential. MLT(ASCP) is the medical laboratory technician exam with a different content guideline and eligibility path.
Verify current exam fees, scheduling, and administrative details at www.ascp.org/boc/explore-credentials/view-all-credentials/MLS. Independent study aid — not official exam material.
More about ASCP MLSStudy tips, positioning, and how this deck compares
ASCP MLS exam prep
Planned ASCP MLS Anki for blood bank, chemistry, hematology, and microbiology/immunology. 60-question / 90-minute readiness check (free 25-question version) is live; official BOC MLS is 100 CAT questions / 2 hours 30 minutes / scaled pass 400. Not MLT.
Built for: Candidates preparing for the ASCP Board of Certification ASCP MLS pathway who want spaced repetition after a free timed readiness check.
Covers: Blood bank; Chemistry; Hematology & hemostasis; Microbiology & immunology.
- Spaced-repetition flashcards
- Planned exam-focused flashcards
- Topic coverage table on this page
- Linked 60-question practice test (free 25-question version)
How this deck compares
OpenExamPrep and CareerEmployer 200+ banks plus ASCP’s paid BOC interactive exam own volume. UniPrep wins when you want a no-signup timed 60Q diagnostic (free 25-question version) with bench-topic scoring plus a planned ownable Anki waitlist — not a 100-item CAT substitute and not an MLT dump.
| Approach | Typical size | Tradeoffs |
|---|---|---|
| Free community decks | 1,000–3,000 |
|
| Budget mega-packs | 1,000+ |
|
| This deck | Planned exam-focused flashcards |
|
ASCP MLS study guide
What is inside
Planned **60** flashcards across blood bank, chemistry, hematology, and microbiology/immunology — the same four buckets as the free readiness check. Built for ASCP BOC **MLS** scientist judgment (antibody ID, transfusion practice, hemolysis flags, CBC smear holds, cultures), not MLT-only technician dumps and not phlebotomy-only PBT.
Plan with the free MLS mock (live now)
**Start:** Take the [60-question ASCP MLS readiness check (free 25-question version)](/mock-exams/ascp-mls-readiness-check) (90 minutes / 70% diagnostic). **Then:** Use the BOC MLS content guideline and a full-length CAT-style bank for stamina. **When Anki ships:** 15–20 cards/day on the weakest topic row only.
Official ASCP BOC MLS: **100 multiple-choice questions / 2 hours 30 minutes / computer-adaptive / scaled pass 400** (100–999). Our mock is a shorter linear diagnostic. Official content also weights urinalysis, immunology, and laboratory operations (5–10% each) — those themes appear inside the four UniPrep buckets, not as extra topics. MLT(ASCP) is a separate technician exam.
Pitfalls this deck targets (when live)
Candidates treat a 60Q free check as the 100-item CAT, confuse MLS with MLT, or skip clerical ID and specimen-integrity items. Cards force scientist-level decisions under spaced recall.
What this does not replace
ASCP BOC registration, Pearson VUE scheduling, or a full-length CAT bank. Anki is **planned** on UniPrep — not a live Gumroad SKU yet. Independent prep — not ASCP BOC material.
Medical Laboratory Scientist — MLS(ASCP) / MLS(ASCPi) & product FAQ
How many questions are on the ASCP MLS exam?
The national MLS(ASCP) exam is 100 computer-adaptive multiple-choice questions in 2 hours 30 minutes. The scaled passing score is 400 on a 100–999 scale. UniPrep’s check is a shorter 60-question / 90-minute linear diagnostic (free 25-question version).
Is UniPrep’s MLS check the official ASCP exam?
No. The 60-question check (free 25-question version) is independent practice. The matching Anki deck is planned (waitlist). Not ASCP BOC material.
Is MLS the same as MLT?
No. MLS(ASCP) is the medical laboratory scientist credential. MLT(ASCP) is the medical laboratory technician exam with a different content guideline and eligibility path.
Is there a free ASCP MLS practice test?
Yes. Take the 60-question readiness check (free 25-question version) at /mock-exams/ascp-mls-readiness-check. Your first UniPrep2Go mock, including this ASCP MLS one, is a free 25-question timed diagnostic (any exam, Exam or Learn mode, no signup); full-length mocks and retakes run on the $5 UniPrep2Go Mock Pass — 5 attempts on any mock.
Is this official exam material?
No. Independent UniPrep2Go study aid — not affiliated with or endorsed by ASCP Board of Certification.
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