Krillion prompt · October 29, 2026
Name something you can measure about the human body
Krillion accepted 1,750 answers for this prompt in Dive #106. They’re all below, starting at the trench floor with the gem and rising to the Plankton everyone thinks of first.
Test a guess
Thinking of playing? Test a word before you look.
Notes on this prompt
- With 1,750 accepted answers, this prompt is about 2.9 times wider than a typical Krillion prompt (about 598).
- 1,505 answers (86%) are Deep Cuts and 209 are Rare, while 5 sit at Plankton.
Quick picks
The shortest Rare or deeper answers, easy to type before the timer runs out.
hCG +60 Mood +60 Urea +60
Also accepted elsewhere
The same answer counted for a different prompt in the archive.
Every accepted answer
One in a Krillion
The gem picked for each prompt. Trench floor.
- Two-point discrimination
Your back can't tell two pinpricks apart closer than about 3 cm.
Deep Cut
Real obscurity. This is where the list gets long.
- 1,25-Dihydroxyvitamin D
- 1,5-Anhydroglucitol
- 1.5-mile run time
- 10K time
- 17-Hydroxyprogesterone
- 2-mile run time
- 2,3-BPG level
- 2K erg time
- 3-mile run time
- 5-HIAA
- 5'-nucleotidase
- 5K time
- Abdominal depth
- Abdominal skinfold
- Academic aptitude
- Acetylcholine level
- Acetylcholine receptor antibodies
- Acid phosphatase
- Acne severity
- Acoustic reflex threshold
- Acromiohumeral distance
- Across back
- ACTH
- Activated clotting time
- Active minutes
- Activities of daily living score
- Adaptive behaviour
- Addis count
- Adenosine
- Adenosine deaminase
- Adenosine diphosphate
- ADHD symptom score
- Adiponectin
- Adversity quotient
- AFib burden
- Afterload
- Aggression
- Agouti-related peptide
- Agreeableness
- Airway resistance
- Airway responsiveness
- Akathisia severity
- Albumin
- Albumin-creatinine ratio
- Albumin-to-globulin ratio
- Alcohol use score
- Aldolase
- Aldosterone
- Aldosterone-to-renin ratio
- Alertness
- Alexithymia
- Alkaline phosphatase
- Alpha-1 acid glycoprotein
- Alpha-1 antitrypsin
- Alpha-2 antiplasmin
- Alpha-fetoprotein
- ALT
- Aluminium level
- Alveolar ventilation
- Alveolar–arterial gradient
- Alveoli count
- Amniotic fluid index
- Amplitude of accommodation
- Amygdala volume
- Amylase
- Anaerobic power
- Anal canal length
- Anal diameter
- Anal sphincter pressure
- ANCA
- Androstenedione
- Anger
- Angiotensin II
- Angiotensin-converting enzyme
- Anhedonia
- Anion gap
- Ankle breadth
- Ankle height
- Ankle jerk reflex
- Ankle mobility
- Ankle-brachial index
- Anogenital distance
- Anterior chamber angle
- Anterior chamber depth
- Anti-CCP
- Anti-DNase B
- Anti-dsDNA
- Anti-GBM
- Anti-histone antibodies
- Anti-Müllerian hormone
- Anti-Ro and anti-La
- Anti-smooth muscle antibodies
- Anti-tTG
- Anti-Xa level
- Anticardiolipin antibodies
- Antimitochondrial antibodies
- Antinuclear antibody
- Antiphospholipid antibodies
- Antisperm antibodies
- Antistreptolysin O titre
- Antithrombin
- Aortic diameter
- Aortic valve area
- Aortic valve gradient
- APACHE II
- Apathy
- Ape index
- Apgar score
- Apnoea-hypopnoea index
- ApoB/ApoA1 ratio
- Apolipoprotein A1
- Apolipoprotein B
- Appendicular lean mass
- Appendix length
- Areola size
- Arm curl reps
- Arm-leg blood pressure gradient
- Armscye
- Arneth count
- Arousal index
- Arsenic level
- Arterial resistivity index
- Arteriovenous oxygen difference
- Asprosin
- Assertiveness
- AST
- AST/ALT ratio
- Asthma control
- Atherosclerotic cardiovascular disease risk
- Atlanto-dental interval
- ATP level
- Atrial natriuretic peptide
- Augmentation index
- Autism traits
- Axilla height
- B cell count
- Back extensor endurance
- Back pain disability
- Back strength
- Ball of foot circumference
- Ball of foot length
- Band neutrophils
- Band size
- Baroreflex sensitivity
- Basal body temperature
- BASDAI
- Base excess
- BASFI
- Basion-dens interval
- Basophil count
- Baux score
- Beep test level
- Beighton score
- Belt size
- Bence Jones protein
- Bench press max
- Bench press reps
- Beta-2 glycoprotein I antibodies
- Beta-2 microglobulin
- Beta-2 transferrin
- Beta-alanine
- Beta-carotene
- Bi-iliac breadth
- Biceps reflex
- Biceps skinfold
- Bile acids
- Bile output
- Biotinidase activity
- Biparietal diameter
- Birth length
- Birth weight
- Bishop score
- Bladder pressure
- Blast count
- Bleeding time
- Blood density
- Blood in urine
- Blood vessel diameter
- Blood vessel length
- Blood viscosity
- BMI percentile
- BNP
- Body adiposity index
- Body buoyancy
- Body cell mass
- Body density
- Body depth
- Body heat production
- Body impedance
- Body radioactivity
- Body roundness index
- Body shape index
- Body surface area
- Body volume
- Body volume index
- BOLD signal
- Bone age
- Bone marrow density
- Bone porosity
- Bone thickness
- Boredom proneness
- Bowel symptom score
- Brachioradialis reflex
- Brain age
- Brain cell count
- Brain glucose metabolism
- Brain tissue density
- Brain-derived neurotrophic factor
- Breast density
- Breast milk fat content
- Breast milk supply
- Breath hydrogen
- Breath ketones
- Breath methane
- Breath odour
- Breathlessness
- Bronchodilator response
- Brown fat activity
- BUN-to-creatinine ratio
- Bunion size
- Burn size
- Burnout
- Bust point distance
- Buttock depth
- Buttock height
- Buttock-knee length
- Buttock-popliteal length
- C-peptide
- C-terminal telopeptide
- C1 esterase inhibitor
- CA 15-3
- CA 19-9
- CA-125
- Cadmium level
- Caffeine dependence
- Caffeine level
- Calcitonin
- Calf skinfold
- Canthal tilt
- Capillary refill time
- Carbamazepine level
- Carbohydrate deficient transferrin
- Carbon dioxide production
- Carboxyhemoglobin
- Cardiac index
- Cardiac output
- Cardiac reserve
- Cardiovascular disease risk
- Carnitine
- Carotid intima-media thickness
- Carrying angle
- Catecholamines
- CD4 count
- CD4/CD8 ratio
- CD8 count
- CEA
- Cell division rate
- Cell size
- Cell viability
- Central blood pressure
- Central venous pressure
- Cephalic index
- Cerebral blood flow
- Cerebral oxygen saturation
- Cerebral perfusion pressure
- Cerebrospinal fluid pressure
- Cerebrospinal fluid volume
- Ceruloplasmin
- Cervical effacement
- Cervical length
- Cervicale height
- Chair stand reps
- Character strengths
- Chest breadth
- Chest depth
- Chest expansion
- Chest height
- Chest skinfold
- Chin arc
- Chin projection
- Chloride
- Cholecystokinin
- Cholesterol ratio
- Choline
- Cholinesterase
- Choroidal thickness
- Chromium
- Chromogranin A
- Chromosome count
- Chromosome length
- Circulating tumour cells
- Circulating tumour DNA
- Circulation time
- CK-MB
- Clavicle length
- Clean and jerk max
- Clean max
- Clitoral index
- Clitoral length
- Closing capacity
- Clot strength
- Cobalt level
- Cobb angle
- Cocaine level
- Coccyx length
- Cochlear duct length
- Codependency
- Coenzyme Q10
- Cognitive failures
- Cognitive flexibility
- Cognitive reflection
- Cold agglutinins
- Collagen level
- Colon length
- Common bile duct diameter
- Compartment pressure
- Complement
- Concussion score
- Cone cell count
- Cone cell size
- Confidence
- Conicity index
- Conscientiousness
- Contrast sensitivity
- Cooper test distance
- Coordination
- Copeptin
- Copper level
- Core strength
- Corneal curvature
- Corneal diameter
- Corneal endothelial cell density
- Corneal hysteresis
- Corneal thickness
- Coronary calcium score
- Coronary perfusion pressure
- Cotinine
- Cough peak flow
- Cranial capacity
- Craniovertebral angle
- Cravings
- Creatine kinase
- Creatinine clearance
- Creatinine height index
- Creativity
- Critical closing pressure
- Critical flicker fusion frequency
- Critical power
- Crown-rump length
- Cryoglobulins
- Crystallized intelligence
- CSF albumin
- CSF amyloid beta
- CSF cell count
- CSF glucose
- CSF IgG index
- CSF lactate
- CSF protein
- CSF/serum albumin ratio
- CSF/serum glucose ratio
- Cup-to-disc ratio
- Curiosity
- Cuticle length
- Cyanide level
- Cycling power
- Cyclosporine level
- CYFRA 21-1
- Cystatin C
- D-dimer
- Dark adaptation
- DCP
- Dead hang time
- Dead space
- Deadlift max
- Decision-making
- Deep sleep
- Defibrillation threshold
- Dementia severity
- Demi-span
- Dental age
- Developmental age
- DHEA-S
- Diadochokinetic rate
- Diagonal conjugate
- Diaphragmatic excursion
- Diffusing capacity
- Digit ratio
- Digoxin level
- Dihydrotestosterone
- Dilute Russell's viper venom time
- Dip count
- Disease activity
- Dissociation
- Dizziness score
- DNA length
- DNA methylation level
- Double support time
- Dream recall
- Drug dependence
- Drug levels
- Dynamic Gait Index
- E/A ratio
- Ear breadth
- Ear canal diameter
- Ear canal length
- Ear protrusion
- Eardrum size
- Earlobe length
- Earlobe width
- Early warning score
- Earwax volume
- Eating disorder symptoms
- Ecarin clotting time
- Eczema severity
- Educational quotient
- Ejaculatory latency
- Ejection fraction
- Elastic recoil
- Elbow breadth
- Elbow height
- Elbow-grip length
- Elbow-to-elbow breadth
- Elbow-to-fingertip length
- Electrochemical skin conductance
- Electrodermal activity
- Emotional maturity
- Emotional reactivity
- Emotional regulation
- Emotional stability
- Empathy
- Enamel thickness
- End-diastolic volume
- End-systolic volume
- End-tidal CO2
- Endometrial thickness
- Eosinophil cationic protein
- Eosinophil count
- Episodic memory
- Erectile function
- Erythema index
- Erythrocyte fragility
- Erythrocyte sedimentation rate
- Erythropoietin
- Esophagus diameter
- Esophagus length
- Estimated fetal weight
- Ethyl glucuronide
- Ethylene glycol level
- Euglobulin lysis time
- Eustachian tube length
- Evoked potential
- Executive function
- Exercise heart rate
- Exhaled carbon monoxide
- Exhaled nitric oxide
- Expiratory reserve volume
- Extracellular water
- Extracellular water ratio
- Extraversion
- Eye alignment
- Eye dryness score
- Eye height
- Eye movement speed
- Eye protrusion
- Eye transverse diameter
- Eyebrow length
- Eyebrow width
- Eyelash count
- Face height
- Face recognition
- Face width
- Facial angle
- Facial index
- Facial symmetry
- Facial width-to-height ratio
- Factor II
- Factor IX
- Factor V
- Factor VII
- Factor VIII
- Factor X
- Factor XI
- Factor XII
- Factor XIII
- Fall risk
- Fallopian tube length
- Fat mass
- Fat mass index
- Fat oxidation rate
- Fat-free mass index
- Fatigue
- Fatigue index
- Fear
- Fecal alpha-1 antitrypsin
- Fecal bile acids
- Fecal calprotectin
- Fecal egg count
- Fecal elastase
- Fecal fat
- Fecal lactoferrin
Rare
Genuinely uncommon. A strong pick on any prompt.
- 40-yard dash time
- Active B12
- Adrenaline
- Agility
- Ammonia
- Ankle circumference
- Antibody levels
- Antral follicle count
- Anxiety level
- Arch height
- Arm circumference
- Attention span
- Axial length
- Balance
- Basal metabolic rate
- Bilirubin
- Biological age
- Biotin
- Bite force
- Bladder capacity
- Blink rate
- Blood flow
- Blood lead level
- Blood loss
- Blood pH
- Blood volume
- Body composition
- Bone length
- Bone mass
- Bowel movement frequency
- Bra size
- Brain activity
- Brain size
- Breath-holding time
- C-reactive protein
- Cadence
- Calcium
- Calf size
- Calories burned
- Cervical dilation
- Chest size
- Chronotype
- Clothing size
- CO2 level
- Cognitive function
- Color vision
- Cortisol
- Creatinine
- Cup size
- Depression score
- Depth perception
- Distance walked
- DMFT index
- Dopamine
- Dress size
- Ear length
- Endorphins
- Endurance
- Energy level
- EQ
- Eyelash length
- Ferritin
- Finger length
- Flexibility
- Folate
- Foot width
- Forearm circumference
- Forearm length
- Glomerular filtration rate
- Grip strength
- Growth hormone
- Growth velocity
- Gut transit time
- Hair density
- Hair growth rate
- Hair length
- Hair loss
- Hair thickness
- Hand breadth
- Hand span
- Happiness
- HbA1c
- hCG
- HDL
- Head circumference
- Hearing
- Heart rate recovery
- Heart rate variability
- Heart size
- Height percentile
- Hematocrit
- Hemoglobin
- Histamine
- Hormone levels
- Hydration
- Inseam
- Insulin
- Insulin resistance
- Intestine length
- Intraocular pressure
- Iodine
- Ketones
- Kidney function
- Lactate
- LDL
- Lean body mass
- Leg length
- Libido
- Liver function
- Lower leg length
- Magnesium
- Manual dexterity
- Melatonin
- Memory
- Menstrual cycle length
- Mercury level
- Mile time
- Mole count
- Mood
- Muscle tone
- Nail growth rate
- Nail length
- Neck size
- Nose length
- Number of bones
- Number of fingers
- Number of teeth
- Number of toes
- Oestrogen
- Ovulation
- Oxytocin
- Pain level
- Pain tolerance
- Palpebral fissure length
- Pants size
- Phosphate
- Platelet count
- Posture
- Potassium
- Power output
- Processing speed
- Progesterone
- Pupil size
- Pupillary distance
- Range of motion
- Reaction time
- Red blood cell count
- Reflex
- Refractive error
- REM sleep
- Resting heart rate
- Ring size
- Running speed
- Salivary flow rate
- Semen volume
- Sense of smell
- Sense of taste
- Serotonin
- Shirt size
- Shoulder width
- Skin elasticity
- Sleep duration
- Sleep quality
- Sleep stages
- Sperm count
- Sprint speed
- Standing long jump
- Step count
- Stomach acid level
- Strength
- Stress level
- Stride length
- Sweat rate
- Tear production
- Testicular volume
- Testosterone
- THC level
- Thigh length
- Thigh size
- Toe length
- Tongue length
- Torso length
- Total protein
- Triglycerides
- TSH
- Tumour size
- Underbust
- Urea
- Uric acid
- Urine colour
- Urine output
- Vaginal size
- Visceral fat
- Vitamin B1
- Vitamin B2
- Vitamin B3
- Vitamin B5
- Vitamin B6
- Vitamin D
- VO2 max
- Vocal range
- Voice pitch
- Waist-to-hip ratio
- Walking speed
- Weight percentile
- White blood cell count
- Working memory
- Wrist size
- Zinc
Schooler
Solid, but you’re swimming with the crowd.
- Age
- Arm length
- Arm span
- Blood alcohol
- Blood sugar
- BMI
- Body fat
- Bone density
- Bust size
- Cholesterol
- Eyesight
- Hand size
- Hip size
- IQ
- Iron
- Lung capacity
- Muscle mass
- Oxygen saturation
- Penis size
- Respiratory rate
- Shoe size
- Sodium
- Vertical jump
- Vitamin A
- Vitamin B12
- Vitamin C
- Vitamin E
- Vitamin K
- Vitamin levels
- Waist size
Plankton
The first thing everyone thinks of.
- Blood pressure
- Body temperature
- Heart rate
- Height
- Weight
More from Dive #106
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- Name an animal with a one-word name containing "ck"
- Name a country where another religion has more followers than Christianity
- Name someone who has been a teammate of Lionel Messi, Cristiano Ronaldo, LeBron James or Tom Brady
- Name a hair type, texture, or natural color