USMLE Step 3 CCS Orders Guide

High-Yield Orders to Know Cold for CCS Cases

🚩 Key Principle: These orders rarely hurt your score, but missing them loses big points!

Total Orders

20

High Yield

100%

Cases Covered

90%+

Critical Misses

0

General Labs

CBC (Complete Blood Count)

Checks for anemia, leukocytosis (infection), thrombocytopenia.

πŸ“Œ Nearly universal in ER/inpatient; drives antibiotics, transfusion, bleeding eval.

CMP/BMP (Metabolic Panel)

Electrolytes (Na, K, Cl, HCO₃), renal function, liver function.

πŸ“Œ Guides fluids, insulin/potassium protocols, medication dosing.

UA (Urinalysis Β± culture)

Infection (UTI/pyelo), hematuria, proteinuria.

πŸ“Œ Cheap, noninvasive, high diagnostic yield.

Fingerstick/Serum glucose

Any AMS, weakness, diaphoresis, seizure.

πŸ“Œ Rules out hypoglycemia immediately.

Cardiac & Vascular

EKG (Electrocardiogram)

Chest pain, SOB, syncope, palpitations, AMS, sepsis.

πŸ“Œ Rapidly rules in/out arrhythmia, ischemia, electrolyte issues.

Cardiac enzymes (Troponin Β± CK-MB)

Chest pain, SOB, syncope.

πŸ“Œ Guides NSTEMI/ACS management.

Telemetry / Cardiac monitor

If unstable, chest pain, arrhythmia risk, ACS, sepsis.

Imaging

Chest X-Ray

SOB, chest pain, cough, fever, trauma.

πŸ“Œ Screens for pneumonia, CHF, PTX, effusion.

Abdominal US/CT

Abdominal pain, trauma, suspected gallstones, appendicitis, AAA.

πŸ“Œ Use targeted imaging, not shotgun.

Reproductive

Pregnancy test (Ξ²-hCG)

Always in women 12–55 unless post-hysterectomy/menopause.

πŸ“Œ Changes management: no radiation, medication restrictions, OB involvement.

Type & Screen / Crossmatch

GI bleed, trauma, ectopic pregnancy, any possible surgical bleed.

πŸ“Œ Prepares for transfusion or OR.

Infectious

Blood cultures Γ—2

Fever, sepsis, endocarditis suspicion.

πŸ“Œ Always before starting antibiotics.

Urine culture

Suspected UTI/pyelo.

Sputum culture

Pneumonia/severe respiratory infection.

CSF studies (LP)

Meningitis, encephalitis suspicion (after CT if ↑ICP signs).

Supportive

Oxygen (nasal cannula or mask)

If hypoxic, tachypneic, or in distress.

IV access (large-bore or central line)

For fluids, meds, transfusions.

IV fluids (NS or LR)

Dehydration, sepsis, DKA, hypotension.

Vital signs monitoring

ICU/unstable patients (q1h-q4h checks).

Pulse oximetry

Any respiratory/cardiac case.

Why These Orders Matter

Safety Net

These orders rarely hurt your score, but missing them loses big points.

Scoring System

CCS rewards you for catching life-threatening diagnoses early.

Efficiency

You don't need 100 tests β€” just these 15–20 high-yield ones.

CCS Case Strategy

Start with these orders in almost every case, then branch out based on findings.

Order time-sensitive interventions first (oxygen, IV access, glucose check).

Never forget pregnancy test in women of childbearing age.

Get cultures before antibiotics when infection is suspected.