Man pages for httk
High-Throughput Toxicokinetics

add_chemtableAdd a table of chemical information for use in making httk...
age_draw_smoothDraws ages from a smoothed distribution for a given...
apply_clint_adjustmentCorrect the measured intrinsive hepatic clearance for...
apply_fup_adjustmentCorrect the measured fraction unbound in plasma for lipid...
armitage_estimate_sareaEstimate well surface area
armitage_evalArmitage In Vitro Distribution Model
augment.tableAdd a parameter value to the chem.physical_and_invitro.data...
available_rblood2plasmaFind the best available ratio of the blood to plasma...
benchmark_httkAssess the current performance of httk relative to historical...
blood_mass_correctFind average blood masses by age.
blood_weightPredict blood mass.
bmiageCDC BMI-for-age charts
body_surface_areaPredict body surface area.
bone_mass_agePredict bone mass
brain_massPredict brain mass.
calc_analytic_cssCalculate the analytic steady state plasma concentration.
calc_analytic_css_1compCalculate the analytic steady state concentration for the one...
calc_analytic_css_3compCalculate the analytic steady state concentration for model...
calc_analytic_css_3comp2Calculate the analytic steady state concentration for model...
calc_analytic_css_3compssCalculate the analytic steady state concentration for the...
calc_analytic_css_pbtkCalculate the analytic steady state plasma concentration for...
calc_analytic_css_sumclearancesCalculate the steady state concentration for the sum of...
calc_clearance_fracCalculate the fractional contributions to total clearance
calc_cssFind the steady state concentration and the day it is...
calc_dermal_equivCalculate Dermal Equivalent Dose
calc_dowCalculate the distribution coefficient
calc_elimination_rateCalculate the elimination rate for a one compartment model
calc_fbio.oralFunctions for calculating the bioavaialble fractions from...
calc_fetal_physCalculate maternal-fetal physiological parameters
calc_fup_correctionCalculate the correction for lipid binding in plasma binding...
calc_half_lifeCalculates the half-life for a one compartment model.
calc_hepatic_clearanceCalculate the hepatic clearance (deprecated).
calc_hep_bioavailabilityCalculate first pass heaptic metabolism
calc_hep_clearanceCalculate the hepatic clearance.
calc_hep_fuCalculate the free chemical in the hepaitic clearance assay
calc_ionizationCalculate the ionization.
calc_kairCalculate air:matrix partition coefficients
calc_krbc2puBack-calculates the Red Blood Cell to Unbound Plasma...
calc_maCalculate the membrane affinity
calc_maternal_bwCalculate maternal body weight
calc_mc_cssDistribution of chemical steady state concentration with...
calc_mc_oral_equivCalculate Monte Carlo Oral Equivalent Dose
calc_mc_tkConduct multiple TK simulations using Monte Carlo
calc_rblood2plasmaCalculate the constant ratio of the blood concentration to...
calc_statsCalculate toxicokinetic summary statistics (deprecated).
calc_tkstatsCalculate toxicokinetic summary statistics.
calc_total_clearanceCalculate the total plasma clearance.
calc_vdistCalculate the volume of distribution for a one compartment...
CAS.checksumTest the check digit of a CAS number to confirm validity
cas_id_checkCAS number format check function
check_modelCheck for sufficient model parameters
chem.invivo.PK.aggregate.dataParameter Estimates from Wambaugh et al. (2018)
chem.invivo.PK.summary.dataSummary of published toxicokinetic time course experiments
chem.physical_and_invitro.dataPhysico-chemical properties and in vitro measurements for...
ckd_epi_eqCKD-EPI equation for GFR.
convert_solve_xconvert_solve_x
convert_unitsconvert_units
create_mc_samplesCreate a table of parameter values for Monte Carlo
dawson2021Dawson et al. 2021 data
dawson2023Machine Learning PFAS Half-Life Predictions from Dawson et...
dtxsid_id_checkDTXSID number format check function
EPA.refReference for EPA Physico-Chemical Data
estimate_gfrPredict GFR.
estimate_gfr_pedPredict GFR in children.
estimate_hematocritGenerate hematocrit values for a virtual population
example.seemSEEM Example Data We can grab SEEM daily intake rate...
example.toxcastToxCast Example Data The main page for the ToxCast data is...
export_pbtk_jarnacExport model to jarnac.
export_pbtk_sbmlExport model to sbml.
gen_age_height_weightGenerate demographic parameters for a virtual population
gen_height_weightGenerate heights and weights for a virtual population.
gen_serum_creatinineGenerate serum creatinine values for a virtual population.
get_2023pfasinfoRetrieve chemical information on 2023 EPA PFAS Chemicals
get_caco2Retrieve in vitro measured Caco-2 membrane permeabilit
get_chem_idRetrieve chemical identity from HTTK package
get_cheminfoRetrieve chemical information available from HTTK package
get_clintRetrieve and parse intrinsic hepatic clearance
get_fbioRetrieve or calculate fraction of chemical absorbed from the...
get_fupRetrieve and parse fraction unbound in plasma
get_gfr_categoryCategorize kidney function by GFR.
get_input_param_timeseriesGet timeseries containing the change of each of the input...
get_invitroPK_paramRetrieve species-specific in vitro data from...
get_lit_cheminfoGet literature Chemical Information.
get_lit_cssGet literature Css
get_lit_oral_equivGet Literature Oral Equivalent Dose
get_physchem_paramGet physico-chemical parameters from...
get_rblood2plasmaGet ratio of the blood concentration to the plasma...
get_weight_classAssign weight class (underweight, normal, overweight, obese)
get_wetmore_cheminfoGet literature Chemical Information. (deprecated).
get_wetmore_cssGet literature Css (deprecated).
get_wetmore_oral_equivGet Literature Oral Equivalent Dose (deprecated).
hct_hKDE bandwidths for residual variability in hematocrit
hematocrit_infantsPredict hematocrit in infants under 1 year old.
honda2023.dataMeasured Caco-2 Apical-Basal Permeability Data
honda2023.qsprPredicted Caco-2 Apical-Basal Permeabilities
honda.iviveReturn the assumptions used in Honda et al. 2019
httk_chem_subsetHTTK data chemical subsetting function
httk-packagehttk: High-Throughput Toxicokinetics
httk.performanceHistorical Performance of R Package httk
httkpophttkpop: Virtual population generator for HTTK.
httkpop_biotophys_defaultConvert HTTK-Pop-generated parameters to HTTK physiological...
httkpop_direct_resampleGenerate a virtual population by directly resampling the...
httkpop_direct_resample_innerInner loop function called by 'httkpop_direct_resample'.
httkpop_generateGenerate a virtual population for PBTK
httkpop_mchttk-pop: Correlated human physiological parameter Monte...
httkpop_virtual_indivGenerate a virtual population by the virtual individuals...
httk_vignettesInteract with HTTK vignettes
hw_HKDE bandwidth for residual variability in height/weight
in.listConvenience Boolean (yes/no) functions to identify chemical...
invitro.assay.paramsToxCast In Vitro Assay Descriptors
invitro_mcMonte Carlo for in vitro toxicokinetic parameters including...
is.httkConvenience Boolean (yes/no) function to identify chemical...
is_in_inclusiveChecks whether a value, or all values in a vector, is within...
kapraun2019Kapraun et al. 2019 data
kidney_mass_childrenPredict kidney mass for children
kramer_evalEvaluate the Kramer In Vitro Distribution model
list_modelsList all available HTTK models
liver_mass_childrenPredict liver mass for children
load_dawson2021Load CLint and Fup QSPR predictions from Dawson et al. 2021.
load_honda2025Load Caco2 pereneability QSPR predictions from Honda et al....
load_pradeep2020Load CLint and Fup QSPR predictions predictions from Pradeep...
load_sipes2017Load CLint and Fup QSPR predictions from Sipes et al 2017.
lump_tissuesLump tissue parameters into model compartments
lung_mass_childrenPredict lung mass for children
mcnally_dtReference tissue masses and flows from tables in McNally et...
mecdtPre-processed NHANES data.
monte_carloMonte Carlo for toxicokinetic model parameters
pancreas_mass_childrenPredict pancreas mass for children
parameterize_1compParameters for a one compartment (empirical) toxicokinetic...
parameterize_1tri_pbtkParameterize_1tri_PBTK
parameterize_3compParameters for a three-compartment toxicokinetic model...
parameterize_3comp2Parameters for a three-compartment toxicokinetic model...
parameterize_armitageParameterize Armitage In Vitro Distribution Model
parameterize_dermal_pbtkParameterizea generic PBTK model with dermal exposure
parameterize_fetal_pbtkParameterize_fetal_PBTK
parameterize_gas_pbtkParameters for a generic gas inhalation physiologically-based...
parameterize_IVDParameterize In Vitro Distribution Models
parameterize_kramerParameterize Kramer IVD Model
parameterize_pbtkParameters for a generic physiologically-based toxicokinetic...
parameterize_pfas1compParameters for a one compartment (empirical) toxicokinetic...
parameterize_schmittParameters for Schmitt's (2008) Tissue Partition Coefficient...
parameterize_steadystateParameters for a three-compartment toxicokinetic model at...
parameterize_sumclearancesParameters for a three-compartment model at steady-state with...
parameterize_sumclearancespfasParameters for a three-compartment model at steady-state with...
pearce2017regressionPearce et al. 2017 data
pfas.clearanceInterspecies In vivo Clearance Data for PFAS
physiology.dataSpecies-specific physiology parameters
pradeep2020Pradeep et al. 2020
predict_partitioning_schmittPredict partition coefficients using the method from Schmitt...
propagate_invitrouv_1compPropagates uncertainty and variability in in vitro HTTK data...
propagate_invitrouv_3compPropagates uncertainty and variability in in vitro HTTK data...
propagate_invitrouv_pbtkPropagates uncertainty and variability in in vitro HTTK data...
reset_httkReset HTTK to Default Data Tables
rfunRandomly draws from a one-dimensional KDE
r_left_censored_normReturns draws from a normal distribution with a lower...
rmed0non0u95Draw random numbers with LOD median but non-zero upper 95th...
scale_dosingScale mg/kg body weight doses according to body weight and...
scr_hKDE bandwidths for residual variability in serum creatinine
set_httk_precisionset_httk_precision
sipes2017Sipes et al. 2017 data
skeletal_muscle_massPredict skeletal muscle mass
skeletal_muscle_mass_childrenPredict skeletal muscle mass for children
skin_mass_bosgraPredict skin mass
solve_1compSolve one compartment TK model
solve_1comp_lifestageSolve '1comp_lifestage' model, which has time-dependent...
solve_1tri_pbtkSolve_1tri_PBTK
solve_3compSolve_3comp
solve_3comp2Solve_3comp2
solve_3comp_lifestageSolve the '3comp_lifestage' model, which has time-dependent...
solve_dermal_pbtkSolve_dermal_PBTK
solve_fetal_pbtkSolve_fetal_PBTK
solve_full_pregnancySolve_full_pregnancy
solve_gas_pbtksolve_gas_pbtk
solve_modelSolve_model
solve_pbtkSolve_PBTK
solve_pbtk_lifestageSolve the 'pbtk_lifestage' model, which has time-dependent...
spleen_mass_childrenPredict spleen mass for children
Tables.Rdata.stampA timestamp of table creation
tissue.dataTissue composition and species-specific physiology parameters
tissue_masses_flowsGiven a data.table describing a virtual population by the...
tissue_scaleAllometric scaling.
well_paramMicrotiter Plate Well Descriptions for Armitage et al. (2014)...
wflWHO weight-for-length charts
httk documentation built on Dec. 9, 2025, 9:06 a.m.