Greetings Gang 😈😜 When a CBC flags for anemia at the bench, nobody sits there reciting every anemia ever named. We look at the MCV, then the retic, then the smear. Done. The exam works the same way. Every anemia case, I run the same 3 questions: 𝟭. 𝗪𝗵𝗮𝘁'𝘀 𝘁𝗵𝗲 𝗠𝗖𝗩? (small, normal or big cells) 𝟮. 𝗪𝗵𝗮𝘁'𝘀 𝘁𝗵𝗲 𝗿𝗲𝘁𝗶𝗰? (is the marrow keeping up or not) 𝟯. 𝗪𝗵𝗮𝘁'𝘀 𝘁𝗵𝗲 𝗼𝗻𝗲 𝗰𝗹𝘂𝗲 𝘁𝗵𝗮𝘁 𝗰𝗹𝗼𝘀𝗲𝘀 𝗶𝘁? (iron studies, smear, or the patient's story) Let's run 5 cases exactly like you'd see them on the exam. 🩸 CASE 1 A 28-year-old woman complains of fatigue and heavy periods. She says she's been craving ice. Hgb 9.1 g/dL | MCV 71 fL | RDW 18.5% (high) Ferritin 5 ng/mL (low) | Serum iron 25 µg/dL (low) | TIBC 480 µg/dL (high) Breaking it down: MCV 71 → small cells → think iron deficiency, chronic disease, thalassemia, sideroblastic RDW high → lots of variation in cell size, which fits iron deficiency Ferritin LOW + TIBC HIGH → her iron stores are empty, and her body is grabbing for more Story clues: heavy periods (blood loss) + craving ice (pica) ✅ Answer: Iron deficiency anemia Trap answer: anemia of chronic disease. It's also low iron, but ferritin is normal or HIGH and TIBC is LOW. If ferritin is low, you're done: it's iron deficiency. 🩸 CASE 2 A 24-year-old man of Mediterranean descent has a routine physical. He feels fine. Hgb 11.8 g/dL | MCV 64 fL | RBC 6.1 x10¹²/L (high) | RDW 13.5% (normal) Ferritin 85 ng/mL (normal) Smear: target cells, basophilic stippling Breaking it down: MCV 64 → very small cells, but he's barely anemic and has no symptoms RBC count HIGH → his marrow is pumping out LOTS of tiny cells. That's a classic thalassemia clue. Iron deficiency usually has a LOW RBC count. RDW normal → the cells are all evenly small Ferritin normal → this is NOT an iron problem ✅ Answer: Beta Thalassemia (likely beta thalassemia minor) Next best test: hemoglobin electrophoresis. Look for Hb A2 > 3.5%. Trap answer: "Start iron supplements." Giving iron to a thalassemia patient with normal iron stores can cause iron overload.

Greetings Gang 😈😜 Real talk: it’s been quiet in here, and that’s on me. There are 2,100 of you, all working toward the same goal: passing the ASCP. That’s way too many smart people to be studying alone. So starting today, I’m showing up in here every weekday with something to help you study, like helpful hint/tips, mini-quizzes, and exam traps. All you have to do is show up too. Your first job (it takes 10 seconds) is to comment below with: 1. Your exam date (if you have one, if not, just put the tentative month) 2. The subject you dread most I’ll reply to every single one. The subject that gets the most votes will be the topic of my next post. If you want to go all in, my paid community kicks off 7 days of live study sessions on November 1st, one subject per day. Members also get my ultimate mycology chart, thalassemias and anemias quick guide and the bacteriology buzzwords cheat sheet. 👉🏽 Join here: https://www.skool.com/microscopeviews Let’s get it poppin in here, Gang! — Marilyn

Greetings Gang 😈😜 I gotta be honest... biochemicals are the WORST. Even now after 10 years of being in the field and over a year of teaching them... Catalase, coagulase, oxidase, bile esculin, PYR, CAMP, novobiocin... it starts to feel like a lost cause. The problem isn’t your memory. It’s how most of us study them: as long lists. Your brain doesn’t store lists well. It stores stories, pictures and decisions. Here’s how to switch. 1. Every biochemical answers ONE question. Stop memorizing “S. aureus: catalase +, coagulase +, DNase +, mannitol +...” Instead, ask: “𝗪𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗶𝘀 𝘁𝗲𝘀𝘁 𝘀𝗲𝗽𝗮𝗿𝗮𝘁𝗶𝗻𝗴?” - Catalase: Staph (+) vs. Strep/Enterococcus (−) - Coagulase: S. aureus (+) vs. all other Staph (−) - Novobiocin: S. epidermidis (sensitive) vs. S. saprophyticus (resistant) - Bacitracin / PYR: Group A Strep, S. pyogenes (sensitive / +) - CAMP / hippurate: Group B Strep, S. agalactiae (+) - Optochin / bile solubility: S. pneumoniae (sensitive / soluble) vs. viridans strep - Bile esculin + 6.5% NaCl: Enterococcus (+ / +) vs. group D strep (+ / −) - Oxidase: Pseudomonas, Neisseria, Vibrio, Campylobacter, Helicobacter (+) vs. Enterobacterales (−) If you know what each test splits, you can work out the answer even when you blank on the details. 2. Learn flowcharts, not facts. The exam gives you clues one step at a time, like a flowchart: Gram stain → morphology → arrangement → first test → second test. Study the same way. Example: Gram-positive cocci in clusters → catalase + → coagulase − → novobiocin resistant → UTI in a young woman = S. saprophyticus. Action step: Draw the gram-positive cocci flowchart from memory on a blank page every day this week. Day 1 will be hella messy, but by Day 5 you’ll be doing it in 2 minutes. 3. Give every organism a “personality card," and a gender LOL. Make one card per organism with: - Gram stain + shape: what it looks like under the scope - Plate: what the colony looks like (color, hemolysis, smell) - 1–2 key biochemicals: only the ones that separate it from look-alikes - The disease: the clinical story

👋🏾 Hello, my little Gang of Nasties! I’m really glad you’re here. This space was made specifically for students and future lab professionals who are trying to study smarter, stay motivated, and finally pass the ASCP exam without losing their minds. Whether you’re still in school, prepping for boards, or coming back after a break—this is your space. 👇 Introduce yourself to our FREE Community: 1. What’s your name? 2. Where are you in your lab journey (Student? Graduated already?) 3. Which department is your biggest struggle? 4. Which department is your favorite? I’ll go first… My name is Marilyn, aka @marilynthescientist 👩🏾‍🔬 I’m a Clinical/Medical Laboratory Scientist with 10 years of experience in the field. 💉 I’ve worked everywhere—from tiny Critical Access Hospitals to busy Level 1 Trauma Centers. 🧳 6 of those years were spent traveling across the U.S. 🩸 Currently, I’m holding it down as a Blood Bank Supervisor in California. This space is here for us to learn, laugh, rant, and master the lab world together. No dumb questions, EVER! 📲 Follow me on socials if you want extra lab tips, rants, and ratchet breakdowns: Instagram | TikTok 🧬 If you ever have questions—even the “silly” ones—DM me or post them in the group. 😤💅🏾